Tom Hanks
Self
Jason Alexander
self
Jack Black
Self
Cedric the Entertainer
Self
Larry David
Self
Leonardo DiCaprio
Self
Will Ferrell
George W. Bush
Faith Hill
Self
Dustin Hoffman
Self
Richard Jenkins
Self
Jenifer Lewis
Self
Julia Louis-Dreyfus
Self
Bill Maher
Self
Steve Martin
Self
Tim McGraw
Self
Virginia Newcomb
Self
Kevin Sateri
Self
Ben Stiller
Self
Wanda Sykes
Self
Robin Williams
Self
Jim Lovell
Self
Eric Idle
Self
Robert Smigel
Triumph the Insult Comic Dog
Martin Short
Nathan Thurm
Robert F. Kennedy Jr.
Self
Conan O'Brien
Self
Ray Romano
Self
Kevin Nealon
Self
Dana Carvey
Self
Al Franken
Self
Jeffrey Tambor
Self
Rob Corddry
Self (archived footage)
David Letterman
Self (archived footage)
Matthew Shaffer
Self
William Wessley
Self
Meeghan Henry
Child (uncredited)
Cohl Klop
Global Warming Protector
