In The Day the Earth Stood Still , a contemporary reinvention of the 1951 science fiction classic, renowned scientist Dr. Helen Benson (Jennifer Connelly) finds herself face to face with an alien called Klaatu (Keanu Reeves), who travels across the universe to warn of an impending global crisis. Keanu Reeves stars in this contemporary reinvention of the sci-fi classic that tells the story of an alien who travels across the universe to warn of an impending crisis on Earth . The Day the Earth Stood Still : Directed by Scott Derrickson. With Keanu Reeves, Jennifer Connelly, Kathy Bates, Jaden Smith. A remake of the 1951 classic science fiction film about an alien visitor and his giant robot counterpart who visit Earth. A sci-fi remake of the 1951 classic, starring Keanu Reeves as an alien sent to save Earth from environmental destruction. The film explores the themes of ecology, technology, and human nature, and features a giant robot and a sphere that can stop time.