Paul Le Mat
— David Shaw
Renée Soutendijk
— Iris Norwood
Lee Ving
— Zack
Olivia Barash
— Darla
David Warner
— Dr. Carl Farnsworth
John Crawford
— Homer
Bob Herron
— Kurt Norwood
Gilbert Lewis
— Dean Andrews
Ruth Manning
— Dr. Kathleen Thorpe
Anthony Rapp
— Jamie
Allison Roth
— Female Student
Kevin Marshall Brady
— Student (uncredited)