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)