Harold

John Cho

Kumar

Kal Penn

Maria

Paula Garces

Neil Patrick Harris

Neil Patrick Harris

Seth Goldstein

David Krumholtz

Rosenberg

Eddie Kaye Thomas

Billy Carver

Ethan Embry

Dr. Willoughby

Fred Willard

J.D.

Rob Tinkler

Freakshow

Christopher Meloni

Liane

Malin Akerman

Male Nurse

Ryan Reynolds

Cole

Steve Braun

Clarissa

Brooke D'Orsay

'I'm So High' Kid

Mike Sheer

Christy

Kate Kelton

Officer Palumbo

Sandy Jobin-Bevans

Kenneth Park

Bobby Lee

Burger Shack Employee

Anthony Anderson

Gun Shot Victim

Boyd Banks

Cindy Kim

Siu Ta

Extreme Sports Punk No. 1

Dan Bochart

Mean Tollbooth Guy

Angelo Tsarouchas

Extreme Sports Punk

Steven DiTata

Hippie Student

Dov Tiefenbach

Tarik

Gary Anthony Williams

Tony (uncredited)

Jon Hurwitz

Creepy Guy

Jamie Kennedy

Security Guard

Albert Howell

Dr. Patel

Errol Sitahal

Saikat Patel

Shaun Majumder

Hayden

Hayden Schlossberg

Luis Guzman

Indian Cashier

Rick Sood

Officer Martone

Brad Borbridge

Officer Reilly

Frank Spadone

Giant Bag of Weed

Jordan Prentice

Officer Brucks

John Boylan

White Castle Teenager

Dan Warry-Smith

Female Anchor

Thea Andrews

Raccoon (puppeteer)

Frank Meschkuleit