Saw Looper today. Very well done from both a character and action perspective, and mind-blowing as you would think for any time travel movie. I'm surprised there isn't more discussion of this on the board, since it's certainly an EN World-favoring movie.

(space for spoiler warning)

Although, [spoiler]I would think that when Joe shoots himself at the end, and thus eliminates his future self, the fact that his future self ceased to exist would have undone all that had been done, restarting the time loop all over again. And my wife had some paranoid fantasy about Sid and Joe being the same given the stories of their origins, though that has to be parallel structure since Joe didn't have TK.[/spoiler]