Tom Hanks is the host of this show with a comic approach to raise awareness concerning the environment.
Tom Hanks
Self
Jason Alexander
self
Jack Black
Cedric the Entertainer
Larry David
Leonardo DiCaprio
Will Ferrell
George W. Bush
Faith Hill
Dustin Hoffman
Richard Jenkins
Jenifer Lewis
Julia Louis-Dreyfus
Bill Maher
Steve Martin
Tim McGraw
Virginia Newcomb
Kevin Sateri
Matthew Shaffer
Ben Stiller
Wanda Sykes
William Wessley
Robin Williams
Meeghan Henry
Child (uncredited)
Jim Lovell
Eric Idle
Cohl Klop
Global Warming Protector
Robert Smigel
Triumph the Insult Comic Dog
Martin Short
Nathan Thurm
Robert F. Kennedy Jr.
Conan O'Brien
Ray Romano
Kevin Nealon
Dana Carvey
Al Franken
Jeffrey Tambor
Rob Corddry
Self (archived footage)
David Letterman
Ron de Moraes
Director
Jay Roach
Robert B. Weide
Sheila Manning
Casting
Mickey Moscynski
Art Direction
Laura Sill
Makeup Artist
Dennis Grzesik
Sound Mixer
Brad Rushing
Director of Photography