Jim Carrey as Peter Appleton

Martin Landau as Harry Trimble

Laurie Holden as Adele Stanton

Gerry Black as Emmett Smith

David Ogden Stiers as Doc Stanton

Bob Balaban as Elvin Glyde

Jeffrey DeMunn as Mayor Ernie Cole

Hal Holbrook as Congressman Doyle

Brent Briscoe as Sheriff Cecil Coleman

Ron Rifkin as Kevin Bannerman

James Whitmore as Stan Keller

Susan Willis as Irene Terwilliger

Catherine Dent as Mabel

Brian Howe as Carl Leffert

Karl Bury as Bob Leffert

Chelcie Ross as Avery Wyatt

Amanda Detmer as Sandra Sinclair

Allen Garfield as Leo Kubelsky

Daniel von Bargen as Federal Agent Ellerby

Mario Roccuzzo as Jerry the Bartender

Earl Boen as Newsreel Announcer (voice)

Bruce Campbell as Roland the Intrepid Explorer

Cliff Curtis as The Evil But Handsome Prince Khalid

Michael Sloane as Kindly Old Professor Meredith

Garry Marshall as Studio Executive (voice)

Paul Mazursky as Studio Executive (voice)

Sydney Pollack as Studio Executive (voice)

Carl Reiner as Studio Executive (voice)

Rob Reiner as Studio Executive (voice)

Matt Damon as Luke Trimble (voice)

Shawn Doyle as Federal Agent Saunders

Frank Collison as Subpoena Server

Bill Gratton as Daley

Ginger Williams as Louise

Ken Magee as Coastal Engineer

Csilla Horvath as Nurse Muriel

April Ortiz as Vera

Larry Cox as Grauman's Usher

Julie Richardson as Grauman's Bon-Bon Girl

Scotty Leavenworth as Joey

Grant Vaught as Boy on Beach

Bob Wells as Reverend

Kevin DeMunn as Western Union Man

Matt G. Wiens as Spencer Wyatt

Jeffrey Adams as Principal Swing Dancer (uncredited)

Steven Lee Allen as Studio Guard (uncredited)

Kris Andersson as Dancer (uncredited)

Alvah Bessie as Self (Hollywood Ten, arrives, behind Cole) (archive footage) (uncredited)

Herbert J. Biberman as Self (Hollywood Ten, arrives) (archive footage) (uncredited)

Jennifer Blaire as Carl's Date (uncredited)

Chris Carver as Dancer (uncredited)

Lester Cole as Self (Hollywood Ten, arrives) (archive footage) (uncredited)

Lathan Crowe as Casanova (uncredited)

Corey Foxx as Photographer (uncredited)

Kate Greeke as Popcorn Girl (uncredited)

Gordon Hart as Swing Dancer (uncredited)

J. Edgar Hoover as Self (archive footage) (uncredited)

Jesse Jensen as Soldier (uncredited)

Mary Kircher as Swing Dancer (uncredited)

Tony Laanan as Grauman's Usher (uncredited)

Ring Lardner, Jr. as Self (Hollywood Ten, arrives, behind Biberman) (archive footage) (uncredited)

John Howard Lawson as Self (Hollywood Ten, testifies) (archive footage) (uncredited)

Brian Libby as Studio Guard Hal (uncredited)

Melissa S. Markess as Swing Dancer (uncredited)

Amanda Melby as Young Mrs. Trimble (uncredited)

Christopher Metas as Cassanova (uncredited)

Samuel Ornitz as Self (Hollywood Ten, arrives) (archive footage) (uncredited)

Kimberly Prendez as Girl at Welcome Home Party (uncredited)

Maudie Purcell as Old Lady (uncredited)

Bubba Dean Rambo as Swing Dancer (uncredited)

George Ratliff as Dancer (uncredited)

Craig Richards as Studio Guard (uncredited)

Philip Romano as Sword fight (uncredited)

Dave Rosenbaum as Swing Dancer (uncredited)

Adrian Scott as Self (Hollywood Ten, arrives, behind Cole) (archive footage) (uncredited)

Gary Sommers as FBI Agent (uncredited)

Cole Spivey as Theater Patron (uncredited)

Tai the Elephant as Elephant (uncredited)

Robert Thorne as FBI Agent (uncredited)

Jack Truman as Party Member (uncredited)

Steven Paul Zsenyuk as Driver/Theater Patron (uncredited)