Keith Carradine

as Harry Whitney

Tina Majorino

as Toni Whitney

Keith Szarabajka

as Billy Baker

Chelsea Field

as Thalice Whitney

Joshua Jackson

as Mark Baker

Aidan Pendleton

as Paula Whitney

Jay Brazeau

as Griff Armstrong

Shane Meier

as Steve Whitney

Shirley Broderick

as Mrs. McCann

Andrea Libman

as Mary May

Bill Dow

as Ellwyn

Joy Coghill

as Betsy

Stephen Dimopoulos

as Dan Snow

Frank C. Turner

as John Miller

Kristian Ayre

as Gerald

Gregory Smith

as Bobby

Ric Reid

as Henry White

Duncan Fraser

as Jack Adams

Gary Jones

as Lance Tindall

Teryl Rothery

as Jennifer Fife

Douglas Newell

as Lou

Annette O'Toole

as Adult Voice of Toni

Tory the Sea Lion

as Andre The Seal