Shelley Duvall
— Mrs. Anderson
Scott Grimes
— Arlo Anderson
Elliott Gould
— Bill Anderson
Paul Williams
— Gus
Ian Abercrombie
— Dr. Fritsky
Amy Lynne
— Suzy
Hal Sparks
— Jim
Conroy Gedeon
— Mr. Fried
Bob Tzudiker
— Dr. Harding
Gary Schwartz
— Whittlestone
Patricia Sherick
— Officer #1
Don Oscar Smith
— Officer #2
Elizabeth Berkley
— Kathy