"The Day the Earth Stood Still" is a 2008 science fiction film directed by Scott Derrickson, starring Keanu Reeves and Jennifer Connelly. The movie is a remake of the 1951 film of the same name. The story revolves around an alien named Klaatu who arrives on Earth to assess humanity's worthiness to continue existing. The movie explores themes of environmentalism, technology, and humanity's relationship with nature.