Special Guest Stars Marcia Wallace voices Edna Krabappel Joe Mantegna voices Fat Tony Phil Hartman voices Troy McClure Phil Hartman voices Lionel Hutz Phil Hartman voices Joey Neil Patrick Harris voices Bart Simpson (tv movie) Phil Hartman voices Godfather Guest Stars Pamela Hayden voices Milhouse Van Houten Jo Ann Harris voices Lewis Clark Pamela Hayden voices Additional Voices Jo Ann Harris voices Richard Jo Ann Harris voices Skinner's Secretary Jo Ann Harris voices Princess Opal Uncredited Tress MacNeille voices Jimbo Jones