George Segal
— Dr. Frank Bower
Stockard Channing
— Helen Bower
Andrew Robinson
— Doctor Royce
Gary Bayer
— Dr. Gramley
Nancy Cartwright
— Jean
Christa Denton
— Kelly Bower
Tate Donovan
— Ricky
Laura Harrington
— Melody
Shawnee Smith
— Carol
Viveka Davis
— Susan Bower
Kathleen Wilhoite
— Penny
Kathleen York
— Linda
Chad Allen
— Bobby
John Gowans
— Mr. Sutter
Biff Yeager
— Parent
Barbra Rae
— Parent
Virginia Morris
— Parent
John Philbin
— Brian
Chris Tashima
— Student (uncredited)