Catherine O'Hara as Marilyn Hack

Harry Shearer as Victor Allan Miller

Parker Posey as Callie Webb

Christopher Moynihan as Brian Chubb

John Michael Higgins as Corey Taft

Eugene Levy as Morley Orfkin

Jane Lynch as Cindy

Fred Willard as Chuck

Jennifer Coolidge as Whitney Taylor Brown

Christopher Guest as Jay Berman

Jim Piddock as Simon Whitset

Ed Begley Jr. as Sandy Lane

Bob Balaban as Philip Koontz

Michael McKean as Lane Iverson

Stephen Rannazzisi as Studio Gate Guard

Simon Helberg as Junior Agent

Ricky Gervais as Martin Gibb

Michael Hitchcock as Hate It Film Critic

Don Lake as Love It Film Critic

Rachael Harris as Mary Pat Hooligan

Richard Kind as Marketing Person

Sandra Oh as Marketing Person

Paul Dooley as Paper Badge Sergeant

John Krasinski as Paper Badge Officer

Jordan Black as Whitney's Assistant

Scott Adsit as First AD

Craig Bierko as Talk Show Host

Nina Conti as Weather Woman

Stephanie Courtney as Boom Operator

Carrie Aizley as Pam Campanella

Jessica St. Clair as Hula Balls Spokeswoman

Sarah Shahi as Sanchez

Suzy Nakamura as First AC

Jane Morris as Script Supervisor

David Blasucci as Second AD

Ari Graynor as Young PA

Mary McCormack as Pilgrim Woman

Shawn Christian as Pilgrim Man

Deborah Theaker as Liz Fenneman

Scott Williamson as Skip

Steven M. Porter as Floor Manager

Larry Miller as Syd Finkleman

CJ Vanston as Talk Show Band Leader

Joe Satriani as Talk Show Guitarist

Oneida James as Talk Show Bassist

Curt Bisquera as Talk Show Drums

Anne King as Talk Show Trumpet

Sheila Gonzalez as Talk Show Saxophone

Lance Barber as Dinkie

Skyler Stone as Don

Mark Harelik as Round Table Host

Rick Gonzalez as Chillaxin' Host

Loudon Wainwright III as Nominee Ben Connelly

Claire Forlani as Self

Hart Bochner as Self

Kevin Sussman as Commercial Director

Casey Wilson as Young Actress

Kevin Christy as Young Actor

Derek Waters as Even Younger Actor

Yoshi Ando as Ad Agent (uncredited)

Curt Clendenin as Dinner Guest (uncredited)

Steven Dell as Young PA (uncredited)

Christian Ojore Mayfield as Studio Delivery Man (uncredited)

Carmen Scott as Crew Member (uncredited)