Robin Williams

Dale Putley

Billy Crystal

Jack Lawrence

Julia Louis-Dreyfus

Carrie Lawrence

Nastassja Kinski

Collette Andrews

Charlie Hofheimer

Scott Andrews

Bruce Greenwood

Bob Andrews

Dennis Burkley

Calvin the Trucker

Haylie Johnson

Nikki Trainor

Charles Rocket

Russ Trainor

Patti D'Arbanville

Shirley Trainor

Jared Harris

Lee

Louis Lombardi

Matt

Mark McGrath

Sugar Ray Band

Jason Reitman

Wrong Kid in Alley

Catherine Reitman

Victoria

Dana Gould

Room Service Waiter

Meagen Fay

Megan

Harry Northup

Reno Jail Cop

Paul Herman

Mr. Barmore

J. Anthony Pena

Boat Painter (as Jose Esau Pena)

Tom Verica

Peter

Jennifer Crystal Foley

Rose

Rhino Michaels

Roadie #2

Ricky Harris

Bellhop

Chris Jaymes

Gas Station Guy

Claudette Wells

Ms. Tweesbury

Susan Traylor

Flight Attendant

Mary Gillis

Slot Machine Lady

Mindy Seeger

Nurse

Jennifer Echols

Ball Park Vendor

Geoffrey Infeld

Mime

Tamara Zook

Francine the Waitress

Frank Medrano

Mechanic

Lee Weaver

Airline Passenger

Mel Gibson

Scott the Body Piercer (uncredited)

Mary McCormack

Virginia Farrell (uncredited)