Christopher Mintz-Plasse Sid (uncredited)
Josh Hutcherson Philip / "Denny"
Melanie Griffith Jean Shelton
Kristen Bell Kristen Bell
Dave Franco Greg / "Mark"
James Franco Tommy / "Johnny", Director, Producer
Judd Apatow Judd Apatow (uncredited)
Zac Efron Dan / 'Chris-R'
Bryan Cranston Bryan Cranston (uncredited)
Zoey Deutch Bobbi
Jason Mitchell Nate (uncredited)
Jacki Weaver Carolyn / "Claudette"
Seth Rogen Sandy, Producer
Jerrod Carmichael Actor Friend
Alison Brie Amber
Bob Odenkirk Stanislavsky Teacher
Sharon Stone Iris Burton
Dylan Minnette Dylan Minnette (uncredited)
Adam Scott Adam Scott
Paul Scheer Raphael
Kevin Smith Kevin Smith
Erin Cummings Female Guest (uncredited)
Danny McBride Danny McBride
Charlyne Yi Safowa
David DeCoteau David DeCoteau (uncredited)
Tommy Wiseau Henry
Nathan Fielder Kyle Vogt / "Peter"
Greg Sestero Casting Agent (uncredited), Book
Lauren Ash Florist "Erin"
Kate Upton Kate Upton (uncredited)
Eliza Coupe Erica Chase (uncredited)
Michael Disco Executive Producer
John Early Chris
John Powers Middleton Executive Producer
Brian Huskey Teller "James"
Keegan-Michael Key Keegan-Michael Key
Lizzy Caplan Lizzy Caplan
Dree Hemingway Female Guest #2
J.J. Abrams J.J. Abrams
Peter Gilroy Laemmle Employee
Jessie Ennis Receptionist
Megan Ferguson Jessie
Kether Donohue Actress #6
Brett Gelman Acting Teacher (uncredited)
Zach Braff Zach Braff (uncredited)
Joe Mande Todd
Andy Clement Makeup Designer, Prosthetic Designer
Sweet P. Vaughn Makeup Department Head
Angelyne Angelyne
Tom Franco Karl
Christi Cagle Hairstylist
Vanessa Price Hair Department Head
Shane Ryan-Reid Front Row Premiere Attendee (uncredited)
Katie Greathouse Music Editor
Justin Duval Gaffer
Cameron Brinkman Actor at Premier (uncredited)
Slim Khezri Actor at Premiere (uncredited)
Bruno Roussel Music Editor
Jason Mantzoukas Peter
Brenda Abbandandolo Costume Design
Kurt Bryant Stunt Coordinator
Tamzin Brown Tommy's Date at Premier (uncredited)
Ryan Moody Associate Producer
June Diane Raphael Robyn / "Michelle"
Amechi Okocha Mama's Boy (uncredited)
Neil Lewis Second Assistant Director
Ike Barinholtz Ike Barinholtz
Jesse M. Feldman Second Unit Director of Photography
Kelli Konop Executive Producer
Jordan Daem Waiter (uncredited)
Claudia Orozco Makeup Artist
Vincent Marinelli Bartender (uncredited)