Reparto

• 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)

Producción

• Scott Rudin — casting
• Scott Rudin — casting director
• Martin Bregman — producer
• Louis A. Stroller — executive producer

Dirección

• Marshall Brickman — director
• Robert Barth — second assistant director
• Michael Rauch — first assistant director

Guion

• Marshall Brickman — screenplay
• Thomas Baum — story
• Marshall Brickman — story

Vestuario y maquillaje

• Robert Jiras — makeup artist
• Santo Loquasto — costume design
• Frank Bianco — hairstylist

Sonido

• Harriet Fidlow — sound editor
• Dan Sable — sound editor
• Steve Scanlon — sound mixer
• Stanley Silverman — music
• Dan Rosenberg — sound recordist
• Dick Vorisek — sound re-recording mixer
• Tom Fleischman — sound re-recording mixer

Efectos visuales

• Werner Koopmann — visual effects

Equipo técnico

• Victor Magnotta — stunt coordinator
• Victor Magnotta — stunts
• Edward Drohan — special effects
• Louise Wolf — stunts
• Jery Hewitt — stunts

Arte

• Dave Weinman — set dresser
• Stuart Wurtzel — production design
• John Godfrey — set decoration

Cámara

• Adam Holender — director of photography

Montaje

• Nina Feinberg — editor