Casey Kasem
Shaggy (archive footage) (uncredited)
Acting
Sandy Duncan
Self
Acting
Davy Jones
Self
Acting
Tim Conway
Self
Acting
Phyllis Diller
Self
Acting
Jonathan Lipnicki
Self
Acting
Tom Kenny
Mayor of Townsville - Top Cat (voice)
Acting
Jeff Bennett
Johnny Bravo (voice)
Acting
Ron McClary
Captain Linger (voice)
Acting
Don Knotts
Self
Acting
Jonathan Winters
Self
Acting
Robin Williams
Self
Acting
Marsha Crenshaw
Announcer (voice)
Acting
Arthur Anderson
Eustace Bain (voice)
Acting
Doug Preis
Thundarr the Barbarian (voice)
Acting
Janet Waldo
Judy Jetson (voice)
Acting
Thea White
Muriel Bain (voice)
Acting
B.J. Ward
Betty Rubble (voice)
Acting
Jennifer Martin
Miss Sara Bellum (voice)
Acting
Charlie Adler
Big Red Guy - Chicken (voice)
Acting
Grey DeLisle
Daphne Blake (voice)
Acting
Caroline Sellers
Wilma Flintstone (Young) (voice)
Acting
B.J. Mitchell
Barney Rubble (Young) (voice)
Acting
Tom Kane
Professor Utonium - Him (voice)
Acting
Brenda Vaccaro
Bunny Bravo (voice)
Acting
Jeff Bergman
Porky Pig - Fred Flintstone / Foghorn Leghorn / Elmer Fudd (voice)
Acting
Debbie Allen
Self (uncredited)
Acting
Christina Augustinos
Producer (uncredited)
Acting
David-Paul Grove
Johnny 2x4 (voice) (archive footage) (uncredited)
Acting
Kathleen Barr
Kevin (voice) (archive footage) (uncredited)
Acting
Mel Blanc
Bugs Bunny (voice) (archive footage) (uncredited)
Acting
Christine Cavanaugh
Dexter (voice) (archive footage) (uncredited)
Acting
Keenan Christensen
Jimmy (voice) (archive footage) (uncredited)
Acting
Kat Cressida
Dee-Dee (voice) (archive footage) (uncredited)
Acting
Eddie Deezen
Mandark (voice) (archive footage) (uncredited)
Acting
Patrick Ewing
Self (uncredited)
Acting
William Hanna
Self (archive footage) (uncredited)
Directing
Matt Hill
Ed (voice) (archive footage) (uncredited)
Acting
Scott Innes
Scooby-Doo (voice) (uncredited)
Acting
Janyse Jaud
Sarah (voice) (archive footage) (uncredited)
Acting
Chuck Jones
Self (archive footage) (uncredited)
Directing
Peter Kelamis
Rolf (voice) (archive footage) (uncredited)
Acting
Chris Kirkpatrick
Self (uncredited)
Acting
Don Messick
Scooby-Doo (voice) (archive footage) (uncredited)
Acting
Tony Sampson
Eddy (voice) (archive footage) (uncredited)
Acting
Sam Vincent
Edd (voice) (archive footage) (uncredited)
Acting
Frank Welker
Fred Jones (voice) (archive footage) (uncredited)
Acting