Brenda Blethyn

Aunt Millie

Christopher Plummer

Santa Claus

Kevin Pollak

Archimedes

Whoopi Goldberg

Blizzard (voice)

Brittany Bristow

Erin Scott-Pierce

Leif Bristow

Blitzen (voice)

Jacqueline Byers

Skating girl (as Jackie Byers)

Josh Buckle

Jack Andrews

Wendii Fulford

Beth Cameron

Samantha Hayes

(voice)

Ellen-Ray Hennessy

Delphi (voice)

Gary Johnston

Bobby's Father

Demetrius Joyette

Bobby Jackson

Stephanie Morgenstern

Emma Ward

J.D. Nicholsen

Ted Andrews

LeVar Burton