"A writer for a greeting card company learns the true meaning of loneliness when he comes home to find his girlfriend in bed with another man."
Steve Martin
as Larry
Charles Grodin
as Warren
Judith Ivey
as Iris
Steve Lawrence
as Jack
Robyn Douglass
as Danielle
Merv Griffin
as Himself
Joyce Brothers
as Herself
Candi Brough
as Schneider Twin
Randi Brough
Julie Payne
as Rental Agent
Madison Arnold
as Lonely Cop
Roger Robinson
as Greeting Card Supervisor
Dan P. Hannafin
as Park Guard
Joan Sweeny
as Girl in Blood Bank
Nicholas Mele
as Maitre D'
Leon Jones
as Traffic Cop
Richard Delmonte
as Raul
Leslie Wing
as Girl in Bar
Helen Verbit
as Woman in Window
Kenneth O'Brien
as Hold Up Man
Erika Hiller
as Girl in Bank
Karyn Harrison
as Couple in Bar
Hunt Block
Alan Leach
as Bookstore Man
Ed Beheler
as Jimmy Carter Look-Alike
Jerry Grayson
as Man Who Gets Shot
Michael Greer
as Counterman
Georges Saurel
as Waiter
Erik Holland
as Ship's Officer
Hugh Douglas
as Narrator (voice)
Sarah Abrell
as Bride
Ken Hixon
as Guest in Church
Rance Howard
as Minister
Billy James
as Bridge Jumper #2
José Martínez
as Gang Member
Jade Bari
as Cabbie
Gloria Irizarry
as Woman at Elevated
Beau Starr
as 2nd Cop
Dominic Barto
as 2nd Hold-Up Man
Charles DeVries
as Ship's Maitre D'
Santos Morales
as Janitor
Jolina Collins
Lena Pousette
as Frieda
Charlie Laiken
as Man on Roof
Steve Hurwitz
Hardy Rawls
Doug Smith
Tom Kubiak
Joanne Hahn
as Model at Party
Robina Suwol
as Girl at Party
Stephanie Segal
as Agent at Party
George Tyne
as Director at Party
Tony Giorgio
as Writer at Party
Eb Lottimer
as Groom
Dan Moody
as Spaceman
Badja Djola
as Native
Richard Sarradet
as Spaceman Lover
Susan Spilker
as Spacewoman Lover
Matthew Faison
as Lonely Guy
Martin Beck
Charles Bouvier
Leslie Bevis
as Seven Deadly Sins
Lamya Derval
Martina Finch
Madonna Fowler
Jenny Gago
Margo Kelly
Marie Laurin
Loni Anderson
as Herself (uncredited)
Paul Benedict
as Dr. Zook (voice) (uncredited)
Ray Girardin
as Bridge Jumper (uncredited)
Bob Harks
as Bar Patron (uncredited)
Allan Kolman
as Lonely Ship Passenger (uncredited)
Angel Ramirez Jr.
as Gang Member (uncredited)
Mike Tremont
as Single Man (uncredited)
Arthur Hiller
Director
Bruce Jay Friedman
Novel
James Dowell Vance
Production Design
Judy Gordon
Associate Producer
William E. McEuen
Executive Producer
Jerry Goldsmith
Original Music Composer
Victor J. Kemper
Director of Photography
Raja Gosnell
Editor
Toni Howard
Casting
Producer
Betsy Cox
Costume Design
William Reynolds
Lynn Stalmaster
Linda DeScenna
Set Decoration
Del Armstrong
Makeup Artist
Bron Roylance
Judith A. Cory
Hairstylist
C.O. Erickson
Co-Executive Producer
Neil Simon
Adaptation
Ed. Weinberger
Screenplay
Stan Daniels
Unit Production Manager
Jack Roe
First Assistant Director
Alan B. Curtiss
Second Assistant Director
Dorothy Wilde
Sidney H. Greenwood
Property Master
Betty Chaplin
Script Supervisor
Albert Whitlock
Visual Effects
Larry Jost
Sound Mixer
Robert L. Hoyt
Sound Re-Recording Mixer
John J. Stephens
Stanley H. Polinsky
Sam F. Shaw
Supervising Sound Effects Editor
Earl Gilbert
Gaffer
Gaylin P. Schultz
Key Grip
Robert G. Willard
Special Effects
Robert C. Thomas
Camera Operator
Alan R. Disler
Assistant Camera
Bill Roe
Richard Rosenberg
Location Manager
Bernie Schwartz
Dolly Grip
Ken Hall
Music Editor
Melissa Bretherton
Assistant Editor
Nan Dutton
Casting Associate
Ric Sagliani
Clint Althouse
Boom Operator
Donlee Jorgensen
Sound Effects Editor
Michael D. Wilhoit
John Stacy
Michael H. Ford
Bruce Stambler