"A young inductee into the military is given the task of looking after some chimpanzees used in the mysterious 'Project X'. Getting to know the chimps fairly well, he begins to suspect there is more to the secret project than he is being told."
Matthew Broderick
as Jimmy Garrett
Helen Hunt
as Teri Macdonald
Willie
as Virgil
William Sadler
as Dr. Carroll (as Bill Sadler)
Johnny Ray McGhee
as Robertson
Jonathan Stark
as Sgt. Krieger
Robin Gammell
as Col. Niles
Stephen Lang
as Watts
Jean Smart
as Dr. Criswell
Pamela Ludwig
as Lenore
Jules Sylvester
as Airman
Sonny Carl Davis
as Sgt. Ridley
Dick Miller
as Max King
Chuck Bennett
as Gen. Claybourne
Daniel Roebuck
as Hadfield
Mark Harden
as Amn. Lewis
Duncan Wilmore
as Maj. Duncan
Marvin Johnson
as Senator
Harry Northup
as Congressman
Michael Eric Kramer
as Lt. Voeks
Reed R. McCants
as Lt. Frohman
Ward Costello
as Price
Jackson Sleet
as Tavel
Lance August
as Cochran
Gil Mandelik
as M. Perks
Stan Foster
as Daniels
Shelly Desai
as Mr. Verrous
Michael Milgrom
as Melvin
Catherine Paolone
as Miss Decker
John Chilton
as Dr. Hutchins
David Raynr
as Amn. Curtis
Lynn Eastman-Rossi
as Sgt. Huntley
Kim Robillard
as Lt. Rainey
David Stenstrom
as Lt. Durschlag
Richard Cummings Jr.
as Lt. Hayes
Randal Patrick
as Mackler
Bob Minor
as Air Policeman
Raymond Elmendorf
Robert Covarrubias
as Rodriguez (MP)
Robert Dino Shorte
as Jones (MP)
Ken Lerner
as Finley
Travis Swords
as Fanara
William B. Snider
as Warden
Philip A. Roberson
as Reeves
Michael McGrady
as Wilson
Rob Roy Fitzgerald
as Dryer
Deborah Offner
as Carol Lee
Lance E. Nichols
as Hamer
T. Rodgers
as Brig MP
Jackie Roth
as United Way Volunteer
Mady Kaplan
as TV Announcer
Chevis Cooper
as Customer
Ken Sagoes
as Patrolman
Luis A. Pérez
as Bellhop
Sam Laws
as Bartender
Lawrence Lasker
Writer
Walter F. Parkes
Producer
Jonathan Kaplan
Director
Stanley Weiser
Roger Pietschmann
Boom Operator
Ronald R. Reiss
Leadman
Petur Hliddal
Sound Mixer
Joel Marrow
Transportation Coordinator
Property Master
Joseph G. Pacelli Jr.
Set Designer
Clarence Lynn Price
Construction Coordinator
Silvio Scarano
Costume Supervisor
Brian O. Haynes
Location Manager
Albert M. Shapiro
First Assistant Director
Ralph Nelson Jr.
Still Photographer
Ken Beauchene
Sound Recordist
Daniel C. Striepeke
Makeup Artist
Mark Walthour
Gaffer
Danis Regal-O'Connell
Production Coordinator
Michael L. Fink
Visual Effects Supervisor
Don Roberts
Unit Production Manager
Lynn Christopher
Dianne Wager
Assistant Art Director
Christine Lee
Hairstylist
Frederick 'Skip' Wilson
Transportation Captain
Victoria Sampson
Supervising Sound Editor
Victor Paul
Stunt Coordinator
Marcy Bolotin
Unit Publicist
Kenneth D. Collins
Second Assistant Director
Gabriel Cubos
Greg Hall
Set Costumer
Kenneth Wannberg
Music Editor
Kevin F. Cleary
Sound Re-Recording Mixer
Jack Hooper
Negative Cutter
Kevin E. Carpenter
ADR Mixer
Don J. Bassman
Richard Overton
Tom Carlson
Hank Salerno
ADR Editor
James Horner
Original Music Composer
Brent A. Schoenfeld
Editor
Rick Simpson
Set Decoration
Dean Cundey
Director of Photography
Mary E. Vogt
Costume Design
Jackie Burch
Casting
O. Nicholas Brown
Lawrence G. Paull
Production Design
Morgan
Script Supervisor