Dave Franco as Greg / 'Mark'

James Franco as Tommy / 'Johnny'

Seth Rogen as Sandy

Ari Graynor as Juliette / 'Lisa'

Alison Brie as Amber

Jacki Weaver as Carolyn / 'Claudette'

Paul Scheer as Raphael

Zac Efron as Dan / 'Chris-R'

Josh Hutcherson as Philip / 'Denny'

June Diane Raphael as Robyn / 'Michelle'

Megan Mullally as Mrs. Sestero

Jason Mantzoukas as Peter

Andrew Santino as Scott Holmes / 'Mike'

Nathan Fielder as Kyle Vogt / 'Peter'

Joe Mande as Todd

Sharon Stone as Iris Burton

John Early as Chris

Melanie Griffith as Jean Shelton

Hannibal Buress as Bill

Charlyne Yi as Safowa

Jessie Ennis as Receptionist

Peter Gilroy as Laemmle Employee

Lauren Ash as Florist 'Erin'

Karen Macarah as Casting Director

Sugar Lyn Beard as Actress #2

Bob Odenkirk as Stanislavsky Teacher

Brian Huskey as Teller 'James'

Megan Ferguson as Jessie

Randall Park as Male Actor

Steven Liu as Waiter

Tommy Wiseau as Henry

Casey Wilson as Casting Director #2

Jerrod Carmichael as Actor Friend

Xosha Roquemore as Actress #3

Kelly Oxford as Amy - Makeup

Kether Donohue as Actress #6

Jeffrey C. Goodell as Todd's Assistant

Dree Hemingway as Female Guest #2

Angelyne as Angelyne

Tom Franco as Karl

Zoey Deutch as Bobbi

Ike Barinholtz as Ike Barinholtz

Kevin Smith as Kevin Smith

Keegan-Michael Key as Keegan-Michael Key

Adam Scott as Adam Scott

Danny McBride as Danny McBride

Kristen Bell as Kristen Bell

J.J. Abrams as J.J. Abrams

Lizzy Caplan as Lizzy Caplan

Bryan Cranston as Bryan Cranston (uncredited)

Judd Apatow as Judd Apatow (uncredited)

Zach Braff as Zach Braff (uncredited)

David DeCoteau as David DeCoteau (uncredited)

Dylan Minnette as Dylan Minnette (uncredited)

Kate Upton as Kate Upton (uncredited)

Brett Gelman as Acting Teacher (uncredited)

Christopher Mintz-Plasse as Sid (uncredited)

Jason Mitchell as Nate (uncredited)

Greg Sestero as Casting Agent (uncredited)

Eliza Coupe as Erica Chase (uncredited)

Erin Cummings as Female Guest (uncredited)

Michelle Arthur as Theatre Participant (uncredited)

Ricky Mabe as Casting Person (uncredited)

Shane Ryan-Reid as Front Row Premiere Attendee (uncredited)

Tamzin Brown as Tommy's Date at Premier (uncredited)

Cate Freedman as Actress #1 (uncredited)

Amechi Okocha as Mama's Boy (uncredited)

Cameron Brinkman as Actor at Premier (uncredited)

Nicole Gordon-Levitt as Girl in Red Dress (uncredited)

Elizabeth Hirsch-Tauber as Girl on Phone (uncredited)

Jenna Curtis as William Morris Agent (uncredited)

Frederick Keeve as Bartender (uncredited)

Slim Khezri as Actor at Premiere (uncredited)

Corey Weber as Door Man / Bouncer (uncredited)

Katherine Neff as Coco (uncredited)

Taylor DeVoe as Auditioning Actress (uncredited)

Johnny Meyer as Guy Driving Alfa Romeo (uncredited)

Tearra Oso as Jarrod's Friend (uncredited)

Vince Chavez as Movie Premiere Attendee in Blue Shirt (uncredited)

Krista West as Auditioning Actress (uncredited)

Aidiye Aidarbekov as Guest (uncredited)

Kara Gibson as Actor at Premiere (uncredited)

Reşit Barker Enhoş as Actor at Premiere (uncredited)

Tudor Munteanu as Crew Member, Hans (uncredited)

Frank Lui Geo as Premiere Analyst (uncredited)

Bill Rojas as Movie Premiere Actor (uncredited)

Mark Anthony Petrucelli as Jeff (uncredited)

Zhubin Rahbar as Zsolt Magyar (uncredited)

Javi Sánchez-Blanco Boyer as Movie Premiere Guest (uncredited)

Jolie Mitnick Salter as Model Party Guest (uncredited)

Ramona Tibrin as Trophy Wife (uncredited)

Vincent Marinelli as Bartender (uncredited)

Adonis Simmons as Cast and Crew (uncredited)

Elena Cristiean as Auditioning Actress (uncredited)

Cerra Angela Vallentine as Movie Premier Guest (uncredited)

Danny Finneran as Blonde at Casting (uncredited)

Eloho Josephine Okujeni as Hooker (uncredited)

Dan Byelich as Movie Premier Actor (uncredited)

Cynthia Natera as Costume Girl (uncredited)

Jordan Daem as Waiter (uncredited)

Max Valentine as Romano (uncredited)

Michael Rousselet as Movie Premiere Guest (uncredited)