Gene Wilder (Harry Evers)
Bob Newhart (Marvin Ellison)
Martha Scott (Mrs. Reynolds)
Carol Worthington (Contestant)
Dick Gautier (John)
Rob Reiner (Joel Forrest)
Nancy Walker (Mrs. Bender)
William Callaway (Cabbie)
Charles Shull (Announcer)
Richard Schaal (Bob)
Chris Sarandon (Counselor)
Robert Sampson (Dave)
John Archer (Mr. Wood)
Ellen Burstyn (Lynne Evers)
Sidney Clute (Camp Director)
Gino Conforti (Mike)
Norman Fell (Melvin Leonard)
Valerie Harper (Ann Menzente)
Cloris Leachman (Lois Ellison)
Ric Mancini (Bartender)
Jed Allan (Dick)