Bart's Birthday

Dan Castellaneta

Homer Simpson / Abe Simpson / Barney Gumble / Krusty (voice)

Julie Kavner

Marge Simpson / Patty Bouvier / Selma Bouvier (voice)

Nancy Cartwright

Bart Simpson / Nelson Muntz / Ralph Wiggum (voice)

Yeardley Smith

Lisa Simpson (voice)

Hank Azaria

Moe Szyslak / Chief Wiggum / Apu / Comic Book Guy / Carl (voice)

Harry Shearer

Ned Flanders / Mr. Burns / Smithers / Skinner / Lenny (voice)

Conan O'Brien

Conan O'Brien (voice)

Danny DeVito

Herbert Powell (voice)

Seth Rogen

Seth Rogen (voice)

Maggie Roswell

Luann Van Houten (voice)

Kevin Michael Richardson

Dr. Hibbert (voice)

Alex Désert

Carl Carlson / Lou (voice)

Tress MacNeille

Agnes Skinner (voice)

Jenny Yokobori

Kumiko Albertson (voice)

Pamela Hayden

Milhouse Van Houten (voice)

Chris Edgerly

(voice)