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 Joe Mantegna Fat Tony Guest Voice Joe Pantoliano Dante Guest Voice Michael Imperioli Dante Jr. Guest Voice Pamela Hayden Milhouse Van Houten Guest Voice Tress MacNeille Dolph Guest Voice Russi Taylor Martin Prince Guest Voice Karl Wiedergott Additional Voices Guest Voice James Hetfield Himself as Metallica Guest Voice Lars Ulrich Himself as Metallica Guest Voice Kirk Hammett Himself as Metallica Guest Voice Robert Trujillo Himself as Metallica Guest Voice James L. Brooks Executive Producer Matt Groening Executive Producer Al Jean Executive Producer Michael Marcantel Director