John Ritter

Clifford the Big Red Dog (voice)

Wayne Brady

Shackelford (voice)

Grey DeLisle

Emily Elizabeth (voice)

Jenna Elfman

Dorothy (voice)

John Goodman

George Wolfsbottom (voice)

Jess Harnell

Dirk (voice)

Kel Mitchell

T-Bone (voice)

Judge Reinhold

Larry (voice)

Kath Soucie

Jetta / Madison (voice)

Cree Summer

Cleo (voice)

Wilmer Valderrama

Rodrigo (voice)

Earl Boen

Mr. Bleakman (voice)

Cam Clarke

Mr. Mark Howard / Marcus (voice)

Teresa Ganzel

Liza (voice)

Ernie Hudson

P.T. (voice)