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