Walter Matthau as Joseph P. Kotcher

Deborah Winters as Erica Herzenstiel

Felicia Farr as Wilma Kotcher

Charles Aidman as Gerald Kotcher

Ellen Geer as Vera Kotcher

Donald Kowalski as Duncan Kotcher

Dean Kowalski as Duncan Kotcher

Arlen Stuart as Mrs. Fisher

Jane Connell as Miss Roberts

James Brodhead as Mr. Weaver

Jessica Rains as Dr. McKernan

Darrell Larson as Vincent Perrin

Biff Elliot as Motel Manager

Paul Picerni as Dr. Caudillo

Lucy Saroyan as Sissy

Kim Hamilton as Receptionist

Tamar Cooper as Nurse

Amzie Strickland as Film Narrator

Paul Fierro as Pablo

Larry Linville as Peter Stiel

Penny Santon as Mrs. Segura

Janya Braunt as Mrs. Pugh (uncredited)

Dee Carroll as Dorothy Ballinger (uncredited)

Bob Harks as Shopper (uncredited)

Jason Karpf as Trick-or-Treater (uncredited)

Jack Lemmon as Sleeping Bus Passenger (uncredited)