I'm Just a Girl Who Can't Say D'oh

Josh Groban

Professor Frink's Singing Voice (voice)

Maggie Roswell

Luann Van Houten (voice)

Tress MacNeille

Brandine Spuckler (voice)

John Lithgow

John Lithgow (voice)

Jon Lovitz

Llewellyn Sinclair (voice)

Kevin Michael Richardson

Mark (voice)

Pamela Hayden

Lady (voice)