Simon
A group of scientists take Simon, a psychology professor, as a test person for a brainwashing experiment and try to convince him that he is a living being from another planet.
Alan Arkin
Simon Mendelssohn
Madeline Kahn
Dr. Cynthia Mallory
William Finley
Fichandler
Wallace Shawn
Eric Van Dongen
Max Wright
Leon Hundertwasser
Fred Gwynne
Maj. Gen. Korey
Austin Pendleton
Dr. Carl Becker
Judy Graubart
Lisa
Adolph Green
Commune Leader
Keith Szarabajka
Josh
Ann Risley
Pam
David Susskind
Himself
Dick Cavett
Himself
Billie Perkins
Commune Member
Jayant
Barundi
Pierre Epstein
Military Aide
Roy Cooper
General's Aide
Rex Robbins
Army Doctor
David Warrilow
Blades
David Gideon
Security Guard
Hetty Galen
Simon's Mother (voice)
Remak Ramsay
TV Newscaster
Hansford Rowe
Priest Babcock Beastly
Yusef Bulos
Hemling Grotowsky
Jerry Mayer
Prof. Jerry Milstein
Sol Frieder
Rabbi Chaim Glassberg
William Griffis
Senator
Frank J. Lucas
Psychologist
George Riddle
Muttonchop Aide
Tom Kubiak
Roach Reaction Patient
Al Cerullo
Helicopter Pilot
Barbara Mongin
Institute Staff Member
Paula Gibson
Melody
James Dukas
Narrator (voice)
Jim Saxon
Commune Member
Michael Earl
Commune Member
Jay Lowman
Commune Member
Steven Nash
Commune Member
Barbara Bergen
Commune Member
Joyce Adams
Commune Member
Bonnie Deroski
Commune Member
Kathryn Cordes
Commune Member
Leslie Frances Williams
Commune Member
Nick Pippin
Commune Member
Ed Karvoski
Commune Member
Mary Lou Kleinbach
Commune Member
Richard Bassett
Commune Member
Phil Witt
Commune Member
Isam Culver
Commune Member
Rickey Murray
Commune Member
Stephanie Segal
Commune Member
Max Goff
Commune Member
Mary Donnet
Commune Member
Don Stitt
Commune Member
Nikki Kollins
Commune Member
Jenny Gault
Commune Member
Regina Rodwell
Commune Member
Schorling Schneider
Commune Member
Tina Austin
Commune Member
Jeffrey Bacon
Commune Member
Elizabeth Wingate
Commune Member
Joan Adams
Commune Member
Lisa Maurer
Commune Member
Louise Lasser
Doris (voice) (uncredited)
Marshall Brickman
Director
Marshall Brickman
Screenplay
Martin Bregman
Producer
Robert Jiras
Makeup Artist
Harriet Fidlow
Sound Editor
Werner Koopmann
Visual Effects
Santo Loquasto
Costume Design
Victor Magnotta
Stunt Coordinator
Victor Magnotta
Stunts
Scott Rudin
Casting
Robert Barth
Second Assistant Director
Dan Sable
Sound Editor
Thomas Baum
Story
Frank Bianco
Hairstylist
Edward Drohan
Special Effects
Louis A. Stroller
Executive Producer
Dave Weinman
Set Dresser
Marshall Brickman
Story
Michael Rauch
First Assistant Director
Louise Wolf
Stunts
Steve Scanlon
Sound Mixer
Stuart Wurtzel
Production Design
Stanley Silverman
Music
John Godfrey
Set Decoration
Jery Hewitt
Stunts
Dan Rosenberg
Sound Recordist
Dick Vorisek
Sound Re-Recording Mixer
Adam Holender
Director of Photography
Nina Feinberg
Editor
Tom Fleischman
Sound Re-Recording Mixer
Scott Rudin
Casting Director