Brett Gelman Acting Teacher (uncredited)
Zoey Deutch Bobbi
Dave Franco Greg / "Mark"
Josh Hutcherson Philip / "Denny"
Zac Efron Dan / 'Chris-R'
Bryan Cranston Bryan Cranston (uncredited)
Seth Rogen Sandy, Producer
Melanie Griffith Jean Shelton
Kristen Bell Kristen Bell
Bob Odenkirk Stanislavsky Teacher
James Franco Tommy / "Johnny", Director, Producer
Jason Mitchell Nate (uncredited)
Lizzy Caplan Lizzy Caplan
Alison Brie Amber
Sharon Stone Iris Burton
Keegan-Michael Key Keegan-Michael Key
Ike Barinholtz Ike Barinholtz
Dylan Minnette Dylan Minnette (uncredited)
Jason Mantzoukas Peter
Kevin Smith Kevin Smith
Adam Scott Adam Scott
Erin Cummings Female Guest (uncredited)
Christopher Mintz-Plasse Sid (uncredited)
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)
Michael Disco Executive Producer
John Early Chris
Brian Huskey Teller "James"
Dree Hemingway Female Guest #2
Peter Gilroy Laemmle Employee
Randall Park Male Actor
Jessie Ennis Receptionist
J.J. Abrams J.J. Abrams
Brandon Trost Director of Photography
June Diane Raphael Robyn / "Michelle"
Kether Donohue Actress #6
Zach Braff Zach Braff (uncredited)
Danny McBride Danny McBride
Ari Graynor Juliette / "Lisa"
Sweet P. Vaughn Makeup Department Head
Angelyne Angelyne
Tom Franco Karl
Christi Cagle Hairstylist
Shane Ryan-Reid Front Row Premiere Attendee (uncredited)
Eliza Coupe Erica Chase (uncredited)
Justin Duval Gaffer
Cameron Brinkman Actor at Premier (uncredited)
Slim Khezri Actor at Premiere (uncredited)
Tamzin Brown Tommy's Date at Premier (uncredited)
Ryan Moody Associate Producer
Amechi Okocha Mama's Boy (uncredited)
Neil Lewis Second Assistant Director
Jesse M. Feldman Second Unit Director of Photography
Kelli Konop Executive Producer
Jordan Daem Waiter (uncredited)
Claudia Orozco Makeup Artist
Vincent Marinelli Bartender (uncredited)
Cerra Angela Vallentine Movie Premier Guest (uncredited)
Tudor Munteanu Crew Member, Hans (uncredited)
Alex McAtee Executive Producer
Megan Mullally Mrs. Sestero
Nicole Gordon-Levitt Girl in Red Dress (uncredited)
Steve Yandrich Production Supervisor
Danny Finneran Blonde at Casting (uncredited)
Elena Cristiean Auditioning Actress (uncredited)
Jacki Weaver Carolyn / "Claudette"
Jenna Curtis William Morris Agent (uncredited)