Jamie Kennedy as Justin Schumacher

Maria Menounos as Jennifer

Miguel A. Núñez Jr. as Darnell

Michael Rosenbaum as Kip

Christopher McDonald as Marty Schumacher

Debra Jo Rupp as Sylvia Schumacher

Bobby Lee as Aki

Aris Alvarado as Hector

Alan Ruck as Dr. Fry

Jesse 'Casper' Brown as Cole

Stuart Stone as DJ Tanner

Vivica A. Fox as Roxanne

David Hasselhoff as David Hasselhoff

Emmanuel Lewis as Emmanuel Lewis

Alexander Calvert as Young Justin

Alexia Fast as Young Jennifer

Frank C. Turner as Crazy Homeless Man

Burkely Duffield as George Michael Kid