Bradley Cooper

as Phil Wenneck

Ed Helms

as Stu Price

Zach Galifianakis

as Alan Garner

Justin Bartha

as Doug Billings

Heather Graham

as Jade

Sasha Barrese

as Tracy Garner

Jeffrey Tambor

as Sid Garner

Ken Jeong

as Mr. Chow

Rachael Harris

as Melissa

Mike Tyson

as Mike Tyson

Mike Epps

as Black Doug

Jernard Burks

as Leonard

Rob Riggle

as Officer Franklin

Cleo King

as Officer Garden

Bryan Callen

as Eddie Palermo

Matt Walsh

as Dr. Valsh

Ian Anthony Dale

as Chow's #1

Michael Li

as Chow's #2

Sondra Currie

as Linda

Gillian Vigman

as Stephanie

Nathalie Fay

as Lisa

Chuck Pacheco

as Hotel Guest at Valet

Jesse Erwin

as Hotel Valet

Dan Finnerty

as Wedding Singer

Keith Lyle

as Casino Dealer

Brody Stevens

as Officer Foltz

Todd Phillips

as Mr. Creepy

Mike Vallely

as Neeco

James Martin Kelly

as Police Clerk

Murray Gershenz

as Felix

Andrew Astor

as Eli

Casey Margolis

as Budnick

Ken Flaherty

as Old Timer at Gas Station

Joe Alexander

as Pit Boss

Constance Broge

as Woman in Elevator

Sue Pierce

as Mini-Mart Cashier

Floyd Levine

as Tailor

Robert A. Ringler

as Minister

Britt Barrett

as Bridesmaid

Chauntae Davies

as Bridesmaid

Alisa Allapach

as Bridesmaid

Nicholas Furu

as Stun Gun Boy

Angelica Flameno

as Stun Gun Girl

Lily Winn

as Screaming Girl

Katerina Moutsatsou

as Eddie's Assistant

Faleolo Alailima

as Tyson's Bodyguard

Rio Ahn

as Orderly (uncredited)

Joey Brander

as Student (uncredited)

John Jason Bailey

as Caesar's Palace Pimp (uncredited)

Cody Deal

as Roman Soldier at Caesar's Palace (uncredited)

Natalie Cohen

as Casino Guest (uncredited)

Carrie Keagan

as Casino Guest (uncredited)

Stephanie Mathis

as Casino Guest (uncredited)

Guile Branco

as Casino Guest (uncredited)

Richard Alan Reid

as Casino High Roller (uncredited)

Tom Spano

as Casino High Roller (uncredited)

Lanette Fugit Hannah

as High Roller (uncredited)

David Hill

as Parent Driving Jaguar (uncredited)

Mitch Holleman

as Max - Student (uncredited)

Jessica Simons

as Casino Guest (uncredited)

Anthony Mingilino

as Precision Driver (uncredited)

Michael A. Rizza

as Guy in the Elevator (uncredited)

Charlene Geisler

as Katie / Girl in the Elevator (uncredited)

Kaitlin Clark

as Girl in Elevator (uncredited)

Heather Roop

as Mom in Elevator (uncredited)

Joe Satriani

as Guitarist in Wedding Band (uncredited)

Carrot Top

as Himself (uncredited)

Jaira Valenti

as Bartender Hostess (uncredited)

Anat Gerber

as Cocktail Waitress (uncredited)

Victor Yerrid

as Tiger (uncredited)