Alan Arkin

Character: Simon Mendelssohn

Madeline Kahn

Character: Dr. Cynthia Mallory

William Finley

Character: Fichandler

Wallace Shawn

Character: Eric Van Dongen

Max Wright

Character: Leon Hundertwasser

Fred Gwynne

Character: Maj. Gen. Korey

Austin Pendleton

Character: Dr. Carl Becker

Judy Graubart

Character: Lisa

Adolph Green

Character: Commune Leader

Keith Szarabajka

Character: Josh

Ann Risley

Character: Pam

David Susskind

Character: Himself

Dick Cavett

Character: Himself

Billie Perkins

Character: Commune Member

Jayant

Character: Barundi

Pierre Epstein

Character: Military Aide

Roy Cooper

Character: General's Aide

Rex Robbins

Character: Army Doctor

David Warrilow

Character: Blades

David Gideon

Character: Security Guard

Hetty Galen

Character: Simon's Mother (voice)

Remak Ramsay

Character: TV Newscaster

Hansford Rowe

Character: Priest Babcock Beastly

Yusef Bulos

Character: Hemling Grotowsky

Jerry Mayer

Character: Prof. Jerry Milstein

Sol Frieder

Character: Rabbi Chaim Glassberg

William Griffis

Character: Senator

Frank J. Lucas

Character: Psychologist

George Riddle

Character: Muttonchop Aide

Tom Kubiak

Character: Roach Reaction Patient

Al Cerullo

Character: Helicopter Pilot

Barbara Mongin

Character: Institute Staff Member

Paula Gibson

Character: Melody

James Dukas

Character: Narrator (voice)

Jim Saxon

Character: Commune Member

Michael Earl

Character: Commune Member

Jay Lowman

Character: Commune Member

Steven Nash

Character: Commune Member

Barbara Bergen

Character: Commune Member

Joyce Adams

Character: Commune Member

Bonnie Deroski

Character: Commune Member

Kathryn Cordes

Character: Commune Member

Leslie Frances Williams

Character: Commune Member

Nick Pippin

Character: Commune Member

Ed Karvoski

Character: Commune Member

Mary Lou Kleinbach

Character: Commune Member

Richard Bassett

Character: Commune Member

Phil Witt

Character: Commune Member

Isam Culver

Character: Commune Member

Rickey Murray

Character: Commune Member

Stephanie Segal

Character: Commune Member

Max Goff

Character: Commune Member

Mary Donnet

Character: Commune Member

Don Stitt

Character: Commune Member

Nikki Kollins

Character: Commune Member

Jenny Gault

Character: Commune Member

Regina Rodwell

Character: Commune Member

Schorling Schneider

Character: Commune Member

Tina Austin

Character: Commune Member

Jeffrey Bacon

Character: Commune Member

Elizabeth Wingate

Character: Commune Member

Joan Adams

Character: Commune Member

Lisa Maurer

Character: Commune Member

Louise Lasser

Character: Doris (voice) (uncredited)