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