Helen Lovejoy, Maude Flanders, Miss Hoover, Luann Van Houten, Nurse, Others, Additional Voices, Elizabeth Hoover, Librarian, Various...

Kara DioGuardi

Slick Publisher

Martin Prince, Sherri, Terri, Uter, Wendell, Additional Voices, Lewis, Martin, Others, Various...

Prime Minister, Severus Snape

Happy Little Elf, Rubber Baby Buggy Bumper Babysitting Service Receptionist

Fox Mulder

Ellen DeGeneres

Mrs. Burns

Fat Tony, Fit Tony

Leslie Mann

Randy Jackson

Apu

Dana Scully

Troy McClure, Lionel Hutz, 'Look at that stupid kid!', Bill Clinton, Cable Guy, Charlton Heston, Commercial Announcer #2, Congressman, Duff Gardens Commercial Voice-Over, Evan Conover...

Milhouse Van Houten, Jimbo Jones, Rod Flanders, Janey Powell, Sarah Wiggum, Additional Voices, Janey, Others, Boy, Dolph...

Himself

Sideshow Bob

Russell Brand

Himself, Penn Jilette

Richard Dean Anderson

School Therapist

Edna Krabappel, Crowd, Ms. Melon, Others, Spirit #1, Woman in Bar

Francesca

The Great Raymondo

Cecil Terwilliger, Felix