David Cassidy

as Adam-11

Olivia D'Abo

as Chanel-6

Steven Shane McDonald

as Tommy Sears

Jeffrey McDonald

as Chris Johnson

Geoff Hoyle

as Heinz-57

Leif Garrett

as Eddie Trojan

Mark Mothersbaugh

as Chevron-17

Gerald V. Casale

as Yale-44

Carl Reiner

as Dr. Von Mobil

Bob Casale

as Ron-29

David Kendrick

as Ron-31

Rob Reiner

as Dr. Cash

Moon Unit Zappa

as Cheryl Dickman

Tommy Chong

as Stoner

Shelby Chong

as Cashier

Barbara Bain

as Hipster

Julie Brown

as Ms. Liberty

Iron Eyes Cody

as Iron Eyes Cody

Sofia Coppola

as Girl in Parade

Nancye Ferguson

as Nurse

Ann Block

as Chris' Mom

Martin von Haselberg

as Agent 1

Brian Routh

as Agent 2

Maud Winchester

as Cyndi the Waitress

Lorri Holt

as Cop #1

Jerry Carlton

as Streaker

Todd A. Rolle

as Clovis

Don Novello

as Translator

Lucas Reiner

as Fireworks Barker

Michael McShane

as Angry Driver

Morgan Upton

as Teacher

Leigh French

as Voice of the Future

Charles Dean

as Chris' Dad

Michael Jerome West

as Guard (as Tree)

Ryan Wallace

as Chester

Lisa Houston

as Heckler

Jack Blessing

as Voice Talent (voice)

Lisa Michelson

as Voice Talent (voice)

Tracy Newman

as Voice Talent (voice)

Gregory Snegoff

as Voice Talent (voice)

Jonathan Stark

as Voice Talent (voice)

Arnold F. Turner

as Voice Talent (voice)

Ian Davidson

as Guy outside disco (uncredited)

Mikael Johnston

as Dancer (uncredited)

Markus Maguire

as Date Male Restaurant/ Onlooker at Science Fair (uncredited)

Tyrone M. Sanders

as Dancer (uncredited)

Liam O’Brien

as Rodney Snodgrass