Tom Hanks is the host of this show with a comic approach to raise awareness concerning the environment.
Tom Hanks
Jason Alexander
Jack Black
Cedric the Entertainer
Larry David
Leonardo DiCaprio
Will Ferrell
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
Jim Lovell
Eric Idle
Cohl Klop
Robert Smigel
Martin Short
Robert F. Kennedy Jr.
Conan O'Brien
Ray Romano
Kevin Nealon
Dana Carvey
Al Franken
Jeffrey Tambor
Rob Corddry
David Letterman