Daniel Louis Castellaneta is an American actor, voice actor, comedian and television writer. Castellaneta is best known for voicing Homer Simpson on the animated series The Simpsons (1989) (as well as other characters on the show such as Abraham "Grampa" Simpson, Barney Gumble, Krusty the Clown, Sideshow Mel, Groundskeeper Willie, Mayor Quimby, and Hans Moleman). Castellaneta also had voice roles in several other programs, including Futurama (1999), Sibs (1991) and Darkwing Duck (1991), The