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 Harry Shearer Charles Montgomery Burns, Waylon Smithers, Principal Seymour Skinner, Ned Flanders, Otto Mann, Scratchy, Kent Brockman, Dr. Julius Hibbert, Reverend Timothy Lovejoy Voice Hank Azaria Moe Szyslak, Apu Nahasapeemapetilon, Chief Clancy Wiggum, Dr. Nick Riviera Voice Marcia Wallace Edna Krabappel (archive footage) Guest Voice Tress MacNeille Dolph Guest Voice Karl Wiedergott Jimmy Carter , Huckleberry Hound Guest Voice Willie Nelson Himself Guest Voice Patrick Lilly Himself (archive footage) Guest Voice Tom Kite Himself (archive footage) Guest Voice Stephen Hawking Himself (archive footage) Guest Voice Jim Forbes Narrator Guest Voice Gary Coleman Himself (archive footage) Guest Voice Edwin "Buzz" Aldrin Himself (archive footage) Guest Voice James L. Brooks Executive Producer Matt Groening Executive Producer David Mirkin Executive Producer