In Search of Dr. Seuss

Kathy Najimy

as Kathy Lane

Matt Frewer

as The Cat in the Hat

Christopher Lloyd

as Mr. Hunch

Patrick Stewart

as Sergeant Mulvaney

Billy Crystal

as The Voice of America (voice)

Robin Williams

as The Father

Howie Mandel

as Sam-I-Am (voice)

Andrea Martin

as The Ad Woman

David Paymer

as The Ad Man

J.D. Daniels

as Marco (segment "Mulberry Street")

Eileen Brennan

as The Who-Villain

Graham Jarvis

as The Farmer

Brady Bluhm

as Marco (segment "McElligot's Pool")

Andraé Crouch

as Yertle

Bright Eyes

as Mack

Maxi Anderson

as Turtle Choir Member

Troy Burgess

as Turtle Choir Member

Reggie Burrell

as Turtle Choir Member

Rick Charles

as Turtle Choir Member

Sandra Crouch

as Turtle Choir Member

Kristle Murden

as Turtle Choir Member (as Kristle Edwards)

Voncielle Faggett

as Turtle Choir Member

David Gibson

as Turtle Choir Member / Green Eggs and Ham Player

Tammie Gibson

as Turtle Choir Member

Kathy Hazzard

as Turtle Choir Member

Linda McCrary

as Turtle Choir Member

Gene Montoya

as Turtle Choir Member / Green Eggs and Ham Player

Kim O'Kelley

as Turtle Choir Member

Alfie Silas

as Turtle Choir Member

Kevin Alexander Stea

as Turtle Choir Member

Bambi Swayze

as Turtle Choir Member

Jonathan Webb

as Turtle Choir Member

Zelda Williams

as Daughter

Eleanor Columbus

as Daughter

Raymond Del Barrio

as Green Eggs and Ham Player

T.J. Espinoza

as Green Eggs and Ham Player

Susan Lonergan

as Green Eggs and Ham Player

Terry Lindholm

as The Onceler

Kay E. Kuter

as Dr. Seuss (voice)

Frank Welker

as Additional Voice Overs (voice)

Malachi Pearson

as Additional Voice Overs (voice)