2004 movie about a man who hasn't slept in a year and begins to doubt his own sanity.
Psychological thriller/mystery starring Christian Bale. Perhaps, after all is said and done, it isn't entirely a new plot overall, just its own way of telling its story, however the quality of the movie as a whole makes it worthwhile.
The acting/direction/sets/supporting cast all did really well. Just a sit back and watch it unfold movie. And, being a psychological thriller type flick, don't watch it if you are in an action or comedy mood. Watch it if you're in sort of a Fight Club / American Psycho movie mood. It is a kind of weird, twisted, dark, spiraling into the depths of crazy sort of flick.
What really sets the tone for this flick is Christain Bale lost 63 pounds for the role, which is almost as much weight as Vincent D'Onofriogainedto play Pvt Lawrence in Full Metal Jacket (70 lbs). Both actors are considered the greatest loss/gain record holders to date. And for context - Bale did this movie, then gained the weight back for Batman Begins.