In Search of Dr. Seuss

Kathy Najimy

Kathy Lane

Matt Frewer

The Cat in the Hat

Christopher Lloyd

Mr. Hunch

Patrick Stewart

Sergeant Mulvaney

Billy Crystal

The Voice of America (voice)

Robin Williams

The Father

Howie Mandel

Sam-I-Am (voice)

Andrea Martin

The Ad Woman

David Paymer

The Ad Man

J.D. Daniels

Marco (segment "Mulberry Street")

Eileen Brennan

The Who-Villain

Graham Jarvis

The Farmer

Brady Bluhm

Marco (segment "McElligot's Pool")

Andraé Crouch

Yertle

Bright Eyes

Mack

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