John Cho

Harold Lee

Kal Penn

Kumar Patel

Paula Garcés

Maria

Neil Patrick Harris

Neil Patrick Harris

David Krumholtz

Seth Goldstein

Eddie Kaye Thomas

Rosenberg

Christopher Meloni

Freakshow

Malin Åkerman

Liane

Ryan Reynolds

Male Nurse

Fred Willard

Dr. Willoughby

Kate Kelton

Christy

Brooke D'Orsay

Clarissa

Siu Ta

Cindy Kim

Steve Braun

Cole

Bobby Lee

Kenneth Park

Dov Tiefenbach

Hippie Student

Anthony Anderson

Burger Shack Employee

Gary Anthony Williams

Tarik

Rob Tinkler

J.D.

Ethan Embry

Billy Carver

Boyd Banks

E.R. Patient

Dan Bochart

Extreme Sports Punk #1

Mike Sheer

'I'm So High' Kid

Christopher Thompson

'Don't You Wanna Be Cool' Kid

Angelo Tsarouchas

Mean Tollbooth Guy

Albert Howell

Security Guard

Errol Sitahal

Dr. Patel

Shaun Majumder

Saikat Patel

Rick Sood

Indian Cashier

Sandy Jobin-Bevans

Officer Palumbo

Brad Borbridge

Officer Martone

Frank Spadone

Officer Reilly

Jordan Prentice

Giant Bag of Weed

Gary Archibald

Nathaniel Brooks

John Boylan

Officer Brucks

Dan Warry-Smith

White Castle Teenager

Thea Andrews

Female Anchor

Jamie Kennedy

Creepy Guy (uncredited)

Jon Hurwitz

Tony (uncredited)

Hayden Schlossberg

Hayden (uncredited)

Frank Meschkuleit

Raccoon (puppeteer)