Henry Graham
Walter Matthau
Henrietta Lowell
Elaine May
Mel
David Doyle
Mr. von Rensaeller
Fred Stewart
John
Mark Gordon
Gloria Cunliffe
Rose Arrick
Professor Heinrich (uncredited)
Conrad Bain
Smith (uncredited)
William Hickey
Desk Clerk (uncredited)
John O'Leary
Maid (uncredited)
Ida Berlin
Mrs. Heinrich (uncredited)
Mildred Clinton
Victor the Butler (uncredited)
Trent Gough
Andy McPherson
Jack Weston
(uncredited)
Carol Morley
Dodi Heinrich (uncredited)
Cindy Rubenfine
Ellen Stretton
Harold
George Rose
Uncle Harry
James Coco
Mrs. Traggert
Doris Roberts
Sharon Hart
Renée Taylor
Beckett
William Redfield
Bo
Graham Jarvis
Frank
Jess Osuna
Director
Screenplay
Producer
Howard W. Koch
Assistant Director
Steve Barnett
Joseph Manduke
Hillard Elkins
Editor
Don Guidice
Fredric Steinkamp
Director of Photography
Gayne Rescher
Original Music Composer
Neal Hefti
Casting
Marion Dougherty
Edward Beyer
Production Design
Warren Clymer
Richard Fried
Costume Design
Anthea Sylbert
Production Manager
Larry Kostroff
Steven Mussman
Makeup Artist
Irving Buchman
Hairstylist
Phil Naso
Jack Petty
Burt Bluestein
Set Dresser
Joe Friel
Richard Nelson
Bobby Wilson
Sound
Lee Bost
David Dockendorf
Sound Recordist
Larry Wolff
Assistant Editor
Angelo Corrao
Leonard Saltzberg
Script Supervisor
Nicholas Sgarro
Original Film Writer
Jack Ritchie