Daniel Louis "Dan" Castellaneta (born on October 29, 1957 in Oak Park, Illinois) was the voice of Emmett Brown in Back to the Future: The Animated Series, as well as the McDonald's commercial for the toys of the cartoon.
Dan Castellaneta's best known role is that of Homer Simpson & Krusty the Clown on The Simpsons. He also briefly provided the voice of Homer Simpson on the Family Guy episode "Ratings Guy". He voiced both characters on the Family Guy episode "The Simpsons Guy".
He also voiced Harvey in the Tiny Toon Adventures episode "It's a Wonderful Tiny Toons Christmas Special", which included Joe Alaskey as Plucky Duck.
From 1994 to 1995, Castellaneta voiced The Genie (voiced in the 1st and 3rd film by Robin Williams) on Aladdin, as well as the DTV movie The Return of Jafar. The episode "From Hippsodeth, with Love" included Neil Ross providing the voice of King Pector.
Castellaneta provided the voice of Grandpa on Hey Arnold. He along with Mann both performed voice work on the episode Veteran's Day. Castellaneta voiced his character in Hey Arnold: The Movie (2003), which included Christopher Lloyd as the Coroner. He also provided the voices of Thing 1 and Thing 2 in the film adaptation of Dr. Seuss' The Cat in the Hat.
He also voiced Football Player #3 and Martian Sage in the episodes "Quarterback Quack"/"To Love a Duck" on Duck Dodgers which included Alaskey as the title character.
In 2005, Castellaneta reprised the role of Genie (whom he voiced on Aladdin: The Animated Series and the DTV Return of Jafar for Kingdom Hearts 2 along with James Arnold Taylor (who voiced Captain Jack Sparrow).
He also voiced Krusty the Clown in The Simpsons Ride, which also had Christopher Lloyd voicing Emmett Brown (drawn in the style of The Simpson).