possibly my perfect film What can I say - my fave film of all time. I sat down to watch with a few spare hours and a dose of flu. By the time it had finished and mates/hubby returned from pub, I was forced to grab them by the scruff of the neck and make them to watch it. The point of view is superb, giving us just a little more info with each scene, confusing the mind with a backwards timeline while suffusing the whole with a forward facing timeline shot through it, using black and white to delineate the "right" time line. If you guess the riddle before the final scene, you are obviously suited to working as a policeman, or maybe Hercule Poirot.
Each time I watch it I see another hint that I should have seen the first time, or the second, a detail that makes sense only now I know the answer. Gut pearce as our hero is superbly ethereal and really seems to make you feel what it would be like to make no new memories.
Now, where was I?