I saw it, liked it, although my wife, who likes a good violent action flick as much as me, didn't like it. Ultimately too dark for her tastes, I think.
Funny enough, as a few days have gone by, the only scene which sticks with me as being lousy was the looper getting chopped to bits. In what was otherwise a reasonably well-thought-out time-travel flick, this stood out as a scene where the writer/director just wanted something horrifying and disturbing and was willing to throw away the laws of time travel to have it.
When the old looper comes back through time, and gets away, and his younger self gets captured and then dissected, all those accumulated wounds would have been there the MOMENT the 30-years-older-looper come back through time. It's a great paradox - if he comes back through time faceless, armless, and legless, he ain't running away in the first place...which prevents his younger self from getting dissected in the first place. But, regardless, as soon as something gets chopped off younger looper, it's off older looper the moment he comes back. In fact, the mob could have probably accomplished the same goal by either (1) killing younger looper immediately; or (2) chopping off one piece as a lesson: 30 years from now, when you get sent back, don't run, because we'll just chop something more off that you'll miss for the next 30 years.
Just seemed like a nasty scene that broke the logic of the movie, but they wanted it in there so badly they just hoped we wouldn't notice.
Brian Zoubek on what was going through his mind walking to the free throw line with 3.6 seconds remaining in the 2010 National Championship game and Duke up by 1: "Fifty percent [of me is] thinking, This is what I've been dreaming of doing my entire life. Fifty percent I'm crapping my pants."