When Albert Stark is walking through town at night when he sees strange, bright lights emanating from a nearby barn. He goes to investigate and finds inside the barn -- Doc Brown is fixing the DeLorean and when Stark ask what is he doing, he respond with "weather experiment" (reference to Doc Brown saying "Oh just a little weather experiment")
This reference contains two errors: Marty brings the Delorean back to 1885 instead of 1882 (as seen as start of the film) and The Delorean shown in the film is power by Plutonium Chamber instead of Mr. Fusion.
The plot of this Bollywood film is similar to the plot of Back to the Future. In Action Replayy, a young man named Bunty lives an unsatisfied life, as his parents Kishen and Mara are about to divorce. With the help of his girlfriend's scientist grandfather who has invented a time machine, Bunty travels back in time to 1975, where he must make his parents fall in love. While in the past, Bunty learns that his father was weak & socially-awkward (in Back to the Future, Marty learns that his own father was a nerdy wimp). Bunty eventually succeeds in getting his parents together and returns to the present to find that his own life, including his parents' marriage has improved for the better.
2022 Adam's dog is named Hawking, presumably after Stephen Hawking, similar to how Doc Brown's dogs are also named after famous scientists throughout time.
The movie's antagonist, Maya Sorian, travels back from 2050 to give information to her 2022 self to prevent 2050 Adam, 2022 Adam, and their father from preventing the invention of time travel. This theme of giving future information to a characters' younger self is paralleled in Back to the Future Part II, when Biff Tannen gives the Sports Almanac to his younger self in order to alter the future. This similarity is directly called out by 2022 Adam and Biff is mentioned by name.
Throughout the movie, 2022 Adam wears a blue down vest very similar to Marty's.
In one scene, the two Adams are eating a meal in exactly the same way, likely in a nod to the Lou's Cafe scene in Back to the Future, where Marty and George mirror the exact same mannerisms.
The two Adams, and 2050 Adam's wife, Laura, are persued through a forest by soldiers riding hoverboards.
The Adams and their father, Louis, take rest in a motel named 'Pine Ranch', presumably a referrence to Twin Pines Mall/Lone Pine Mall.
The Adams agree not to tell Louis about his future death. At one point, 2022 Adam does attempt to tell him, but Louis tells Adam that he cannot know about his future. This parallels how Doc doesn't allow Marty to tell him about his future death in Back to the Future.
Similar to Doctor Brown’s plan to heat up a train’s boiler to gain the necessary speed, Christopher Lloyd’s character, Rasputin, tried to kill Anastasia the same way. He even went as far as to demolish a bridge for good measure. While that plan did not work, the train exploded in a similar fashion to the one in Back to the Future Part III after plunging into the ravine.
The Avengers discuss how time travel might help them save the universe. Tony Stark (Iron Man) argues that "if there is no logical, tangible way for me to safely execute the said time heist. I believe the most likely outcome would be our collective demise." Scott Lang (Ant-Man) decries "Not if we strictly follow the rules of time travel. I mean, no talking to our past-selves, no betting on sporting events...". Tony responds with "I'm going to stop you right there, Scott. Are you seriously telling me that your plan to save the universe is based on, 'Back to the Future?'" When Scott replies with a"No." Tony says, "Good, you got me worried there. 'cos that would be horse shit. That's not how Quantum Physics works.".
Later, after more details are worked out, Scott exclaims "So Back to the Future is a bunch of bullshit?".
When Scott joins Steve Rogers (Captain America), Natasha Romanoff (Black Widow) and Bruce Banner (The Incredible Hulk) as they test Scott's Quantum Tunnel to be used as a time machine (with Scott as the test subject), Bruce jokes that they "don't wanna lose Tiny [Scott] here in the 1950's". This is a reference to Back to the Future, when Marty McFly is stranded in 1955.
When Clint Barton (Hawkeye) tests the Avengers' Quantum Tunnel & goes back in time, he arrives inside the barn on his family's property. In Back to the Future, when Marty first travels to 1955, he arrives in the Peabody's barn.
When the Avengers time travel into the past to retrieve the Infinity Stones, they revisit moments from previous MCU (Marvel Cinematic Universe) films, such as the Battle of New York in The Avengers, Thor: The Dark World and the opening sequence of Guardians of the Galaxy. This is similar to Back to the Future Part II, when Doc and Marty travel back to 1955 to retrieve the Sports Almanac and they revisit events from the previous movie (Doc preparing his 'weather experiment' in Courthouse Square and the Enchantment Under the Sea dance).
When Tony Stark tries to steal the Tesseract, his attempt is foiled when the past self of Hulk opens a door, knocking Tony out. In Back to the Future Part II, when Marty retrieves the Sports Almanac from Biff, he gets knocked out after the gymnasium door is opened by his past self.
When Tony and Steve time travel to Camp Lehigh in 1970, Tony meets his father Howard Stark. In Back to the Future, Marty meets his father while in 1955.
Alan Silvestri, composer of the score of the Back to the Future trilogy, composed the score of Avengers: Endgame. Silvestri also composed the scores for other MCU films including Avengers: Infinity War (the predecessor to Endgame), The Avengers and Captain America: The First Avenger.
At the San Fransokyo Tech science expo when Hiro is presenting his Microbots, Alistair Krei & his assistant admire the project of another contestant, who is wearing the brain-wave analyzer (invented by Doc Brown in 1955, as seen in Back to the Future). Krei examines a second brain-wave analyzer, before he and his assistant leave, having noticed Hiro's Microbots.
When Bill & Ted's time machine of a phone booth enters into another time period, it sinks into the ground and leave a ring of fire where it departed, similar to the Delorean leaving flaming tire tracks.
In the original script of the movie the time machine was gonna be a 1969 Chevrolet Van but since it resembled the idea of the Delorean time machine, the idea was scrapped.
The Sneakers designed by Shuri are inspired by the Nike Mag.
Shuri designs sound-absorbent shoes called Sneakers, which materialize around the wearer's feet. When Shuri shows the Sneakers to her older brother T'Challa, she states that to create the shoes, she was inspired by the Nike MAGpower-lacing shoes from Back to the Future Part II. Like the Nike MAG, the Sneakers also have power-laces.
In the segment "Zurück in die Zone", the Saxon brothers Jens and Jörg Kasirske want to prevent the fall of the Berlin wall in the year 1989 and the concert of David Hasselhoff which happened at this event. With a modified Trabant similar to the DeLorean, they travel back in time to take part in the press conference of Günter Schabowski.
A scene in this film, where Tommy is tripped at a movie theater is shot similar to the scene in Back to the Future, where Marty trips Biff at Lou's Cafe. Both film feature time travel as a plot element.
Eric Stoltz (who was originally cast as Marty McFly in Back to the Future) appeared in The Butterfly Effect, in which he played George, Tommy Miller's father.
In a film largely referencing Star Wars, Hutch, while making it with a lady in bed in Las Vegas, claims to possess a "flux capacitor" and that the 1.21 gigawatts "don't come cheap".
When Barry travels to the past, his alternate self expresses excitement when his other self says he needs to get 'back to the future', to which he mentions the movie and how much he loves Eric Stoltz's Marty McFly.
Later on, the two Barrys begin arguing after alternate Barry's roommate shows off his Eric Stoltz Marty McFly thigh tattoo, and original Barry argues, telling everyone that Marty McFly is very famously played by Michael J. Fox. This is when original Barry realizes that he has created an alternate universe instead of time travelling.
This film has a plot like Back to the Future and also features time travel as a central plot element. Four friends- Nick Weber, Lou Dorchen, Adam Yates and his nephew Jacob- live very unsatisfied lives (like Marty at the start of Back to the Future): Nick works at a dog-spa & has a rocky marriage with his wife, Adam gets dumped by his girlfriend while Jacob lives in his basement and Lou is an unemployed alcoholic. When Lou is hospitalized after a failed suicide attempt, Adam, Nick & Jacob take him on a trip to the Kodiak Ski Resort, where Nick, Adam & Lou hung out as teenagers. After spending the night partying in their hot tub, the group wake up and find they have travelled back in time to 1986. When a mysterious hot tub reapairman warns the group not to alter history, Nick, Adam & Lou decide to reenact what they did: Adam broke up with his girlfriend Jenny, who stabbed him in the eye with a fork, Lou got beaten up by Blaine, the head of the resort's Ski Patrol and Nick played a disastrous gig with his band. While Adam and Lou relive their experiences, Nick woos the audience with his rendition of 'Jessie's Girl' and gives them a preview of The Black-Eyed Peas' 'Let's Get It Started' (in Back to the Future, while playing at the Enchantment Under the Sea dance, Marty gives the audience a preview of Johnny B. Goode). While wandering around the resort, a hearbroken Adam encounters a music journalist named April and falls in love with her. Lou finds the courage to stand up to Blaine and defeats him, like how George finds the courage to stand up to Biff. Adam, Nick and Jacob return to the present, while Lou decides to remain in the past. Returning to the present, the group finds their lives have changed for the better: Adam is married to April, Nick is now a successful musician with a happy marriage, while Lou expolits his knowledge of the future to found Google (which he names Lougle) and lives a wealthy life with Jacob, who was revealed to be his son.
While in 1986, Jacob flickers out, similar to Marty nearly fading out of existence in Back to the Future.
When the group travel back in time, they accidentaly spill Chernobly, an illegal Russian energy drink onto the controls of the hot tub. In the first script of Back to the Future, Marty spills Coca-Cola onto the controls of the time machine, generating enough power for time travel.
While in the past, Nick and Lou use their knowledge of the future to win at betting on a football game. When a man asks Lou how he gets lucky, calling him "McFly" at the same time, Lou replies that he knows the future.
Crispin Glover, who played George McFly in the first Back to the Future film, appears in Hot Tub Time Machine as Phil, a bellhop at the Kodiak Ski Resort. At the start of the film, Phil is one-armed and hostile, but when the group arrive in the past, they encounter a younger version of Phil, who is polite. Through the film, Phil is involved in incidents (juggling a chainsaw, getting his arm caught in an elevator cage door and passing traffic), which Lou believes would cost him his arm. It is later revealed that Phil loses his arm due to a snowplow. When the group return to the present, they find that Phil is no longer hostile as he was at the start, but has both his arms (Blaine helped him restore it).
The Hot Tub Repairman was played by Chevy Chase. During development of Back to the Future, Chase was among many actors considered to play Emmett Brown, before the role went to Christopher Lloyd.
In the scene where the two characters are playing "Rush" in their garage, one of the characters yells out, "Hey, Chuck, you know that new sound you were looking for?" and falls over, before he can finish the quote, while playing a solo on guitar.
In a scene from this movie, Indiana Jones escapes a nuclear blast unscathed by hiding inside a refrigerator in a fake town at a nuclear test site. This was recycled from an early draft of Back to the Future, where the time machine was a refrigerator.
Indiana Jones and the Kingdom of the Crystal Skull was directed by Steven Spielberg, who was executive producer on all three Back to the Future films.
At the beginning of the film, the lecturer (played by Christopher Lloyd) scribbles some notes about a "flux capacitor" and other elements of time travel on the chalkboard.
Ben Stone (played by Seth Rogan), who impregnates Katherine Heigl's character Alison Scott, sits at dinner and begins to discuss Back to the Future with his friend, including references to the DeLorean time machine and the flux capacitor. His fiance's friend then uses similar references to shut him up.
In the last scene of this Swedish movie, two guys get into a police car (a Volvo V70) that has been modified into a pizza delivery car; they back up, the wheels come out, and it flies away, swings back and goes right toward the camera.
As Rex (voiced by Chris Pratt) describes his backstory, he talks about how he created a time machine. During the building process, Doc and the DeLorean time machine are shown, and Rex takes apart the DeLorean. Later, as Rex travels to the past, it pans to the flux capacitor, indicating that it is the main source of time travel in his time machine. It is then here that Rex reveals that he is actually an older, wiser and more-hardened version of Emmet (also voiced by Chris Pratt).
As Rex begins to fade from existence, he says he is “Back to the Futureing”. Emmet questions what that is and Rex says that it is an older movie that is very popular among older kids. During this speech, his body parts turn transparent, then disappear, like what almost happened to Marty.
At a parade, Crazy Steve pulls up to Drake and Josh's float in a DeLorean DMC-12. Then, the camera makes a close-up examination on the front of the DeLorean similar to the one seen in Back to the Future. When Steve gets back into the car, he immediately drives away. When the car drives away quickly, the license plate falls off and spins around before falling down flat on the roadway.
In a scene where Martin the Martian (played by Christopher Lloyd) is explaining the different kinds of nerplex gumballs to Tim, he holds up the spiky-looking Veenox 7 gumball and tells Tim,"When it comes to Veenox 7, just say 'No'!!"
Napoleon's uncle buys a time machine which follows the same aesthetic as many components from the DeLorean Time Machine, such as the red labels. It also includes the detail of having to insert crystals, instead of plutonium.
When Richard enters the library and meets Christopher Lloyd's character, their interaction is an homage to Lloyd's scene in Back to the Future when Marty meets Doc from the 50's. Doc uses a strange machine on his head to guess what Marty has come to him for, guessing again and again incorrectly and not letting him speak. In The Pagemaster, when Richard meets Lloyd's character (the librarian) he also interrupts him and tries to guess what kind of book Richard has come for, also incorrectly, and not letting him get a word in.
In one scene of the movie, the characters park their RV behind a sign similar to Lyon Estates sign in 1955.
As Paul enters his spaceship to return to his planet, he tells Tara that she is coming with him. Tara hesitates, saying, "I forgot to bring my toothbrush." Paul responds, "Where we're going, we don't need teeth."
In a scene of this movie, when Peggy Sue tells Richard that she had "come from the future", the line was actually "back from the future". This line was overdubbed later on, so viewers would't think of Back to the Future, which was released the previous year. Interestingly, both films use time travel as a central plot element.
Sachi Parker, who play "Bystander #1" in Back to the Future, also appeared in Peggy Sue Got Married playing Lisa, a high-school student in 1960, the year Peggy Sue travels to.
During the Humaniacs film which is being watched at the start of Planet 51, the Crew Cuts' cover of "Earth Angel" can be heard playing on a car radio. Also in the Humaniacs film, a girl states that she's never parked before (similar to what Lorraine told Marty, when they parked at the Enchantment Under the Sea dance).
The town square of Glipforg is similar in layout to Hill Valley's Courthouse Square, featuring a cinema, a gas station and even a courthouse with clock tower.
A cover of Mr. Sandman can be heard playing in the film. The Four Aces' cover of the song was briefly heard in Back to the Future and Back to the Future Part II.
In a scene in the Robert Zemeckis-directed film, the train stops and the frontal tip of the locomotive comes uncomfortably close to the camera. This is a reference to Back to the Future Part III where the scene is exactly the same, when Clara stops the train. In both movies, this shot occurs after a character pulls the train's emergency brake. However, in contrast to Back to the Future, the Hero Boy in The Polar Express pulls the emergency brake to allow Billy the Lonely Boy to board, whilst Clara did so to get off so she could return to Hill Valley to find Doc after realizing the latter truly cared about her.
Later, on board the train, Hero Boy (in The Polar Express) pulls the steam whistle a few times, saying "I've wanted to do that my whole life!". This is the same line that Doc Brown delivers after he pulls the steam whistle multiple times as well. Appropriately enough, the sound of the locomotive's whistle is exactly the same, recycled from BTTF.
When Junior Healy arrives at his sixth grade class, his homeroom teacher Mr. Thorn (played by James Tolkan) is seen writing rules on the blackboard, and at the bottom it says, "No Slackers." Tolkan, who played Mr. Strickland in the Back to the Future series, was fond of calling both Marty and other young men "slackers".
Rango enters a saloon and is laughed at when he asks for water. In Back to the Future Part III, Marty McFly also enters a saloon asks for water and is jeered.
In the OASIS, the DeLorean time machine is the main vehicle of the main character, Parzival, and has a major appearance in the whole movie. Parzival's DeLorean is fitted with the KITT Scanner and AI from the Knight Rider show. Though Parzival's DeLorean can hover above the ground, it has the regular plutonium chamber and not the Mr. Fusion. In the film, Parzival drives the car during the race for the First Key, and during the battle on Planet Doom. The car's windshield is damaged during the battle, after Art3mis falls through it. During battle, the DeLorean is totaled by Nolan Sorrento's Mechagodzilla.
Before Art3mis leaves Aech's workshop, she says to Parzival "I'll wave to you from the finish line, McFly".
Doc Brown appears in the OASIS by wearing his Back to the Future Part II outfit.
Marty's hoverboard appears in Aech's workshop, when Parzival tries out different outfits for his date with Art3mis.
When Parzival is chosing outfits for his date with Art3mis, a Mayor Goldie Wilson re-election poster appears when Parzival admires himself in the mirror.
Also, when Parzival is trying on different outfits, the time circuits are hanging on the wall in the background.
The Zemeckis Cube (a Rubik's Cube-esque device, which turns back time 30 seconds) is named after Back to the Future director Robert Zemeckis. Zemeckis was among the many directors considered to direct Ready Player One.
Alan Silvestri composed the score for this film. Silvestri referenced the music of Back to the Future in the score of Ready Player One.
Ready Player One was produced and directed by Steven Spielberg, who also served as executive producer for all three Back to the Future films.
A promotional poster for Ready Player One is a parody of the theatrical poster of Back to the Future. On this poster, Parzival copies Marty's pose, the Ready Player One logo is in the style of the Back to the Future logo and the tagline reads "He thought life would never go his way... He thought games were his only escape... He's about to find out...a better reality awaits."
A promotional poster for Ready Player One parodies the Back to the Future poster.
Doc Brown (left) in the Oasis, wearing his futuristic outfit.
In this spoofy show, which was performed live in various schools across the USA and shot on video for additional educational use, there's a segment titled "Forward From the Past Part XII" in which Doc (Matt Miller) and Artie (Phil Johnson) find themselves in a future littered with waste that could have been recycled. The segment begins with a mock-up of the iconic logo, underscored by Back in Time and featuring a DeLorean streaking across the screen.
In one scene of this movie, which uses time travel as a central plot element, C.J. & Sebastian's science teacher Mr. Lockhart remarks "Time travel? Great Scott.". Mr. Lockhart was portrayed by Michael J. Fox. In the Back to the Future franchise, "Great Scott" is Doc's catchphrase.
A sequence in this movie is very similar to Back to the Future Part II, but also harkens to It's A Wonderful Life. When Jack Frost tricks Scott into wishing he was never Santa Claus, by holding on to his snowglobe, they both travel back in time 12 years, to the point where Scott killed the last Santa and put on his suit. Jack Frost then becomes the one that distracts the Santa and takes his suit instead, vanishing. Suddenly, Scott is teleported back to the present, but as his old self in a suit and tie, talking to a business associate. His ex-wife no longer talks to him, his son disowns him, and the man who married his wife is now divorced. Scott then finds that the North Pole has been transformed by Jack Frost (now Santa Claus) into a theme park, marketing Christmas for everyone's money (similar to Biff's machinations). After Scott tricks Jack Frost into holding the snowglobe and playing a recording of "I wish I never was Santa Claus", they both return to 12 years prior again. This time, Scott holds back Jack preventing him from stealing the suit, which Scott's younger self finds and wears. After younger Scott takes off in Santa's sleigh, both future Scott and Jack disappear back to the present. When Scott returns as Santa, everything is back to normal.
After being chased and attacked multiple times during his trips to the past, Steve is at a bar where a television commercial for Back to the Future can be heard. Steve criticizes the film, stating that the past is not nearly as nice as it makes it out to be, especially because he is black.
Scott Howard (played by Michael J. Fox) lives in the same house (at 1727 Bushnell Street in Pasadena, California) where the Baines family lived in Back to the Future. The scene where Scott is standing atop the "Wolfmobile" is the same street where Marty would later be hit by Sam Baines's car. Although both films used the same location, the interior of the houses is different.
Teen Wolf was actually completed before Back to the Future but shelved for several months before release. This led fans of Michael J. Fox to wonder why he would star in a lower-budget film, not knowing that Back to the Future was shot after Teen Wolf wrapped. The producers of Teen Wolf took advantage of Back to the Future's fame, and the movie posters remarked "Michael J. Fox is back from the future" (which would interestingly foreshadow one of the famous quotes from Back to the Future Part II). Fox's character of Scott Howard was even renamed Marty in the Italian language version to capitalize on the huge ticket sales of Back to the Future in Italy.
The Blast from the Past shop seen in Tomorrowland.
In this movie, when Casey Newton tries to fix her Tomorrowland pin, she visits a memorabilia store called Blast from the Past. In Back to the Future Part II, the antique shop where Marty purchases the sports almanac is also called Blast from the Past. The shop is later on destroyed in the film, after its owners (revealed to be androids) self-destruct. It could be that David Nix watched the back to the future trilogy which would inspire him to make this fake store.
After Jamie's mother is killed by a serial killer who was last active when they killed 3 girls at a party in 1987, she travels back in time via her friend, Amelia Creston's, photo booth time machine. Whilst there, in an attempt to convince two sheriffs of the murders that haven't happened yet, she asks if they have seen Back to the Future.
When Jamie meets her friend's mother, Lauren Creston, who originally created the blueprints for the time machine, she also asks her if she's seen Back to the Future.
Jamie accidentally disrupts the timing of her parents dating, she asks Lauren if she'll disappear to which Lauren says "Back to the Future got that wrong".
On two occasions in this movie, Rex quotes George McFly, by saying "I don't think I could take that kind of rejection!" and "I don't like confrontations!".
In a scene where Yogi points towards the camera, he says "break the barrier of picnic," this may be a reference to Doc Brown saying "Next Saturday night, we're sending you back to the future!"
