Jack Lemmon
Mel Edison
Jack Lemmon
Mel Edison
Anne Bancroft
Edna Edison
Gene Saks
Harry Edison
Elizabeth Wilson
Pauline
Florence Stanley
Pearl
Maxine Stuart
Belle
Ed Peck
Man Upstairs
Gene Blakely
Charlie
Ivor Francis
Psychiatrist
Stack Pierce
Detective
Patricia Marshall
Woman Upstairs
Dee Carroll
Helen
Ketty Lester
Unemployment Clerk
M. Emmet Walsh
Doorman
F. Murray Abraham
Taxi Driver
James McCallion
Mr. Cooperman
Fat Thomas
Bus Driver
Arlen Stuart
Elevator Passenger
Sylvester Stallone
Youth in Park
Alan DeWitt
Wayne Morgan
Harry Ray
Man with Dog
Lonnie Burr
Man on Street (uncredited)
Eddie Garrett
Elevator Passenger (uncredited)
Ben Lautman
NYU Student (uncredited)
Dave Michaels
Radio Newscaster (voice) (uncredited)
Gary Owens
Radio Newscaster (voice) (uncredited)
John Ritter
Elevator Passenger (uncredited)
Cosmo Sardo
Subway Passenger (uncredited)
Norman Stevans
Elevator Passenger (uncredited)
Joe Turkel
Man Upstairs (voice) (uncredited)
Melvin Frank
Producer
Billie Owens
Sound Effects Editor
Arthur H. Pullen
Sound Effects Editor
Marvin March
Set Decoration
Ed Scheid
Sound Effects Editor
John O. Young
Sound Effects Editor
Randy Nite
Sound Editor
Neil Simon
Theatre Play
Melvin Frank
Director
Carl Manoogian
Key Grip
Pete Candoli
Musician
Arnold Saint Subber
Other
Bruce Satterlee
Second Assistant Director
Arthur Bloom
Boom Operator
Howard Roessel
First Assistant Director
Donald Harris
Music Editor
Billy Mauch
Dialogue Editor
Michael J. Harte
Wardrobe Supervisor
Hal Klein
Unit Production Manager
Marvin Hamlisch
Original Music Composer
Jack C. Jacobsen
Sound Mixer
Hope Williams
Script Supervisor
Gene Lauritzen
Construction Coordinator
Mentor Huebner
Production Illustrator
Lou Barlia
Camera Operator
Vinnie Gerardo
Assistant Camera
Dennis J. Parrish
Property Master
Neil Simon
Screenplay
Tex Rudloff
Sound
James Perdue
Sound Recordist
Alan DeWitt
Dialogue Coach
Philip H. Lathrop
Director of Photography
Al Overton Sr.
Sound
Thalia Phillips
Wardrobe Supervisor
Tommy Tedesco
Musician
Bob Wyman
Editor
Joel Schumacher
Costume Design
Harry Ray
Makeup Artist
Sherry Wilson
Hairdresser
E. Preston Ames
Art Direction
Fred Williams
Makeup Artist