Matt Frewer
The Cat in the Hat
Christopher Lloyd
Mr. Hunch
Patrick Stewart
Sergeant Mulvaney
Billy Crystal
The Voice of America (voice)
Howie Mandel
Sam-I-Am (voice)
Andrea Martin
The Ad Woman
J.D. Daniels
Marco (segment "Mulberry Street")
Eileen Brennan
The Who-Villain
Brady Bluhm
Marco (segment "McElligot's Pool")
Maxi Anderson
Turtle Choir Member
Troy Burgess
Turtle Choir Member
Reggie Burrell
Turtle Choir Member
Rick Charles
Turtle Choir Member
Sandra Crouch
Turtle Choir Member
Kristle Murden
Turtle Choir Member (as Kristle Edwards)
Voncielle Faggett
Turtle Choir Member
David Gibson
Turtle Choir Member / Green Eggs and Ham Player
Tammie Gibson
Turtle Choir Member
Kathy Hazzard
Turtle Choir Member
Linda McCrary
Turtle Choir Member
Gene Montoya
Turtle Choir Member / Green Eggs and Ham Player
Kim O'Kelley
Turtle Choir Member
Alfie Silas
Turtle Choir Member
Kevin Stea
Turtle Choir Member
Bambi Swayze
Turtle Choir Member
Jonathan Webb
Turtle Choir Member
Raymond Del Barrio
Green Eggs and Ham Player
T.J. Espinoza
Green Eggs and Ham Player
Susan Lonergan
Green Eggs and Ham Player
Terry Lindholm
The Onceler
Kay E. Kuter
Dr. Seuss (voice)
Frank Welker
Additional Voice Overs (voice)
Malachi Pearson
Additional Voice Overs (voice)
Winston Churchill
Self - at Potsdam (archive footage) (uncredited)
Charles Durning
(voice) (uncredited)
June Foray
(voice) (archive footage) (uncredited)
Rudolf Heß
Self - with Hitler in Nuremberg (archive footage) (uncredited)
Adolf Hitler
Self (archive footage) (uncredited)
Bob Holt
(voice) (archive footage) (uncredited)
Boris Karloff
(voice) (archive footage) (uncredited)
William D. Leahy
Self - at Potsdam (archive footage) (uncredited)
Vyacheslav Molotov
Self - at Potsdam (archive footage) (uncredited)
Dr. Seuss
Self (archive footage)
Joseph Stalin
Self - at Potsdam (archive footage) (uncredited)
Julius Streicher
Self - with Hitler in Nuremberg (archive footage) (uncredited)
Paul Winchell
(voice) (archive footage) (uncredited)
