Gene Wilder
George Caldwell
Jill Clayburgh
Hildegard 'Hilly' Burns
Richard Pryor
Grover Muldoon
Patrick McGoohan
Roger Devereau
Ned Beatty
Bob Sweet
Clifton James
Sheriff Chauncey
Ray Walston
Mr. Edgar Whiney
Stefan Gierasch
Professor Schreiner & Johnson
Len Birman
Chief
Valerie Curtin
Plain Jane
Lucille Benson
Rita Babtree
Scatman Crothers
Ralston
Richard Kiel
Reace
Fred Willard
Jerry Jarvis
Delos V. Smith Jr.
Burt
Mathilda Calnan
Blue-Haired Lady
Margarita García
Mexican Mama-San
Henry Beckman
Conventioneer
Harvey Atkin
Conventioneer
Lloyd White
Porter
Ed McNamara
Benny
Raymond Guth
Night Watchman
John Daheim
Engineer #2
Jack O'Leary
Fat Man #1
Lee McLaughlin
Fat Man #2
Bill Henderson
Red Cap
Tom Erhart
Cab Driver
Gordon Hurst
Moose
J.A. Preston
Waiter (uncredited)
Nick Stewart
Shoeshiner
Steve Weston
Conventioneer