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

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

Angelo Tsarouchas

Mean Tollbooth Guy

Albert Howell

Security Guard

Shaun Majumder

Saikat Patel

Jordan Prentice

Giant Bag of Weed

John Boylan

Officer Brucks

Thea Andrews

Female Anchor

Jamie Kennedy

Creepy Guy (uncredited)

Jon Hurwitz

Tony (uncredited)

Hayden Schlossberg

Hayden (uncredited)