Walter Matthau
— Joseph P. Kotcher
Deborah Winters
— Erica Herzenstiel
Felicia Farr
— Wilma Kotcher
Charles Aidman
— Gerald Kotcher
Ellen Geer
— Vera Kotcher
Donald Kowalski
— Duncan Kotcher
Dean Kowalski
— Duncan Kotcher
Arlen Stuart
— Mrs. Fisher
Jane Connell
— Miss Roberts
James Brodhead
— Mr. Weaver
Jessica Rains
— Dr. McKernan
Darrell Larson
— Vincent Perrin
Biff Elliot
— Motel Manager
Paul Picerni
— Dr. Caudillo
Lucy Saroyan
— Sissy
Kim Hamilton
— Receptionist
Tamar Cooper
— Nurse
Amzie Strickland
— Film Narrator
Paul Fierro
— Pablo
Larry Linville
— Peter Stiel
Penny Santon
— Mrs. Segura
Janya Braunt
— Mrs. Pugh (uncredited)
Dee Carroll
— Dorothy Ballinger (uncredited)
Bob Harks
— Shopper (uncredited)
Jason Karpf
— Trick-or-Treater (uncredited)
Jack Lemmon
— Sleeping Bus Passenger (uncredited)