Dan Castellaneta Homer Jay Simpson, Barney Gumble, Grampa Simpson, Mayor Joe Quimby, Krusty the Klown, Groundskeeper Willie Voice Julie Kavner Marjorie Bouvier Simpson, Patty Bouvier, Selma Bouvier, Grandma Jackie Bouvier Voice Nancy Cartwright Bartholomew Jo-Jo "Bart" Simpson, Nelson Muntz Voice Yeardley Smith Lisa Marie Simpson Voice Hank Azaria Moe Szyslak, Apu Nahasapeemapetilon, Chief Clancy Wiggum, Dr. Nick Riviera Voice Harry Shearer Charles Montgomery Burns, Waylon Smithers, Principal Seymour Skinner, Ned Flanders, Otto Mann, Scratchy, Kent Brockman, Dr. Julius Hibbert, Reverend Timothy Lovejoy Voice Pamela Hayden Milhouse Van Houten Guest Voice Lance Bass Himself Guest Voice J.C. Chasez Himself Guest Voice Chris Kirkpatrick Himself Guest Voice Joey Fatone Himself Guest Voice Justin Timberlake Himself Guest Voice Marc Terenzi Millhouse Van Houten's Singing Voice Guest Voice Ben Bledsoe Ralph Wiggum's Singing Voice Guest Voice Marcia Wallace Edna Krabappel Guest Voice Tress MacNeille Dolph Guest Voice Karl Wiedergott Additional Voices Guest Voice James L. Brooks Executive Producer Matt Groening Executive Producer David Mirkin Executive Producer