The 2004 horror film 'SAW' is a psychological thriller directed by James Wan and written by Leigh Whannell. It follows two men who are chained in a dilapidated bathroom and must complete a series of tasks in order to survive. The film was a major success, grossing over $100 million worldwide and spawning a franchise of seven sequels. It is widely credited with revitalizing the horror genre in the 2000s.