If you still haven't rented or seen "Memento" yet....

...get thyself to a video store and rent it. It's not for someone with a low attention span - you're going to want to sit there and pay very close attention to keep track of what's going on - but instead of watching it while cleaning as I intended last night, I sat in front of the TV set and didn't move for two straight hours watching this puppy.

The ending, of course, left me with an evil grin. Which is usually a good sign.