If you get a chance to see this film during its' limited (now somewhat expanded) release, do so. It is easily one of the best movies I've seen in years and it would be difficult to imagine Michael Keaton not getting an Oscar nomination for his role. The same can be said for film, story, cinematography and editing. The film is shot in one seamless take, as if you were watching a play via a moving camera. Stunning.
Brilliant story, amazing performances all around and a complete mind fuck of fantasy and reality, creativity and madness.