Scott Derrickson Director Keanu Reeves Klaatu Actor Jennifer Connelly Dr. Helen Benson Actor Kathy Bates Regina Jackson Actor Jaden Smith Jacob Benson Actor John Cleese Professor Barnhardt Actor Jon Hamm Michael Granier Actor Kyle Chandler John Driscoll Actor Robert Knepper Colonel Actor James Hong Mr. Wu Actor John Rothman Dr. Myron Actor Sunita Prasad Rouhani Actor Juan Riedinger William Kwan Actor Sam Gilroy Tom Actor Tanya Champoux Isabel Actor David Scarpa Screenwriter Gregory Goodman Producer Paul Harris Boardman Producer Erwin Stoff Producer David Tattersall Cinematographer David Brisbin Production Design Wayne Wahrman Film Editing Tyler Bates Original Music Tish Monaghan Costume Design Mindy Marin Casting Coreen Mayrs Casting Heike Brandstatter Casting Elizabeth Wilcox Set Decoration