Little bit. :V
If I were to nitpick... it'd be about the absolute slaughtering of the Second Law of Thermo near the end. I was disappointed. Yes, it's a weird thing to nitpick, but, dammit, I'm a nerd, and that's what we do!
Although I suppose time travel on its own plays hell with the Second Law anyway. :doubt:
What part exactly, the one where (spoiler tagged cause this is sort of spoileriffic I guess)
he shoots himself through the chest and Bruce immediately vanishes? Cause there are multiple instances of this effect going on in the film -- the past/future doubles are still considered causally connected (somehow).
I actually really don't care for that depiction of time travel. Personally I prefer one such as that used in Primer, where once you go back in time you are no longer causally connected with your past self. It's still ridiculous, cause if the past self is killed and you trace the world lines, you still get a discontinuity somewhere, presumably in the time machine itself. (Primer has some fun with this where one of the guys goes "I say we shut the [time machine] off while he's still inside and see what happens."). But at least that is not as hard to take seriously as "Oh snap, my past self just died, I guess I shall cease to exist now!"
On one hand doing it that way fixes the discontinuity, but you're still left with a paradox (if he kills himself then he doesn't go back in time and doesn't cause the events that lead to him killing himself and therefore he lives and goes back in time and causes the events that lead to him killing himself and therefore ARGH). I guess with Looper time travel, if you cause a paradox of that severity in the timeline then the universe just says "**** you" and resets the timeline to that moment with you no longer in it. :P
tl;dr time travel is best left not thought about. :V