Harold Gould

as Old Denahi (voice)

as Grandpa Spencer

as Grandpa

as Arthur Mendelson

as Kid Twist

as Mr. Garrett (uncredited)

as Dinosaur Chief (voice)

as General Larrabee

as Anton Inbedkov

as Mr. Winkler

as Irv

as Walter Krieger

as Edwin Griffin

as Monty Moran (2008)

as Hans Hunter

as Arnie Peterson

as Mayor

as Engulf

as Grandfather Disguisey

as Vincente Bravo

as Gerry

as Dr. Wexler

as Sheriff Spanner

as Vernon Crowler

as General Von Lintzer

as Albert Einstein

as Judge John Channing

as Honore Vashon

as Dr. Gustav Stumpfel

as Walter Wise

as Arnold Javits (uncredited)

as Lawrence West

as Mr. Brockelman

as Boake

as Professor Baxter

as Barber Shop Man #4 (uncredited)

as Milt Kaminski

as Joseph Francis

as Solomon Stein

as Dr. William Garibay

as Melvin Millstein

as Calvin Ryland

as Martin Morgenstern

as Arthur

as Victor Freemantle

as District Attorney

as Harry Finneman

as Dietz

as Doctor

as Mr. Farnsworth

as Martin Geller

as Dr. Leibman

as Barney Gerber

as Dr. Willis

as Dr. Mailer

as Agent Carlson

as Cop on Pier

as Major Wilson

as Dr. Ostrer (uncredited)

as Bruno Raphael

as Psychiatrist

as Old Henry Lesser

as Francisco Galedo

as Charles Gwynn

as Andrei Zernov

as Nicholas Dimente

as Old Man

as Father Sweeney

as Prosecutor Tom Finney

as Walter Yost

as Major John Richardson

as Tramp

as Dr. De Long

as Dr. George Duncan

as Miles Webber

as Dr. Stanfield Weston

as Lester Chennery

as Haskell Fox

as Carlisle

as Arthur Stobridge

as Dave Rice

as Rabbi

as Hector Moses

as Mr. Prior

as Colonel Reed

as Howard Cunningham

as Edward Crane

as Col. Holt

as Cal Winslow

as Dr. Peter Duey

as Dr. Knockitoff

as William Shakespeare

as Doctor

as DMV Clerk Correcting Exam

as Hollingsworth

as Solly K.

as Dr. Herman Zerny

as Stowbridge

as Rockerfeller

as Dickie Dayton

as Self

as Nexdhet

as Ganucci's Attorney

Role: Additional Dialogue

as Eric P. Scott

as Louis B. Mayer

as Leo Silver

as Mr. Antrobus

as Robert Westfield

as Martin Wicker

as Phil Colby

as Danny Everson

as Norman Nugent

as Dr. Marvin Elias

as Benny Benito

as Oliver Sully

as Tate

as Bookkeeper

as Lt. Col. Raleigh Wade

as Carl Tessler

as Judge

as Marco

as Morris Mindakovitch

as Dr. Hoxley

as Alan Smithee

as Louis B. Mayer

as David Altman

as Telford Stampley

as Joe Garson

as Al Walpole

as Morgan

as Ponelli

as Alexander Weisberg

as Eliot Bingham

as Dave Ryker

as Arthur

as Carmichael

as Stowbridge

as Cheevers

as Mr. Antrobus

as Dr. Fredericchi

as Harry Danton

as George

as Velvil Finkelstein (segment "Yiddish")

as Tom Garrison

as Sol Wurtzel

as Arnie Tomkins

as Harry Landers

as Mr. Campana

as Mr. Henshaw

as Judge Lowal

as Self

as Sam Quilt

as Wayne

as Leo Silver

as Harry Danton