Cast member on Hey Arnold! Dan Castellaneta Roles Grandpa Phil, Willie the Jolly Olly Man, Nick Vermicelli, Earl, Dr. Murray Steiglitz, Grubby, Grandpa's father, Grandpa's grandfather, Nolo, Peter, Russell Bains, Rockwell, Mr. Egg Cream, Skip Date of birth October 29, 1957 Place of birth Oak Park, Illinois, USA Daniel Louis "Dan" Castellaneta is an American film and television actor, comedian, voice artist and television writer who provided the voice for a number of characters, including Grandpa Phil, The Jolly Ollie Man, Earl, Dr. Murray Steiglitz, and Nick Vermicelli.

Noted for his long-running role as Homer Simpson on the animated television series The Simpsons, he also voices many other characters on The Simpsons, including Abraham "Grampa" Simpson, Barney Gumble, Krusty the Clown, Groundskeeper Willie, Mayor Quimby, and Hans Moleman.

Born in the Chicago suburb of Oak Park, Illinois, Castellaneta started taking acting classes at a young age. He would listen to his father's comedy records and do impressions of the artists. A graduate of Northern Illinois University, Castellaneta joined Chicago's Second City in 1983 and performed with the troupe until 1987. He was cast in The Tracey Ullman Show, which debuted in 1987. The Tracey Ullman Show included a series of animated shorts about a dysfunctional family. Voices were needed for the shorts, so the producers decided to ask Castellaneta to voice Homer. His voice for the character started out as a loose impression of Walter Matthau but later evolved into a more robust voice. He has won three Primetime Emmy Awards for Outstanding Voice-Over Performance for his work on The Simpsons as well as an Annie Award for Outstanding Individual Achievement in the Field of Animation in 1993. Along with his wife Deb Lacusta, Castellaneta has written four episodes of The Simpsons.

Castellaneta has also had roles in several other television shows, including the live-action sitcom Sibs and the animated series Dynamo Duck, Darkwing Duck, Back to the Future: The Animated Series, Earthworm Jim, Aladdin and Hey Arnold!. In 1999, he appeared in the Christmas special Olive, the Other Reindeer and won an Annie Award for his portrayal of the Postman. Castellaneta has also released a comedy CD, I Am Not Homer, and wrote and stars in a one-man play titled Where Did Vincent Van Gogh? Dan has had a few live-action roles such as in the film The Pursuit of Happyness starring Will Smith and his son Jayden and Thandie Newton.

He is married to writer Deb Lacusta and lives in Los Angeles where he occasionally performs alongside the branch of The Second City. Castellaneta is a vegetarian, does not drink any alcoholic beverages, and is a regular exerciser. Castellaneta also practices Tai Chi.