Rodney Dangerfield character Thornton Melon
Keith Gordon character Jason Melon
William Zabka character Chas
Burt Young character Lou
Robert Downey Jr. character Derek
Sally Kellerman character Dr. Diane Turner
Paxton Whitehead character Dr. Phillip Barbay
Terry Farrell character Valerie Desmond
M. Emmet Walsh character Coach Turnbull
Adrienne Barbeau character Vanessa
Kimberlin Brown character Girl in Dorm Hallway
Ned Beatty character Dean David Martin
Sam Kinison character Professor Terguson
Robert Picardo character Giorgio
Edie McClurg character Marge Sweetwater
Kurt Vonnegut Jr. character Kurt Vonnegut Jr.
Oingo Boingo character Oingo Boingo
Derek Savage character Audience Member (uncredited)
