I really enjoyed Looper. It wasn't a perfect film by any means, but I found the story interesting, and I liked the cast.
In the past few years I've started getting into the more dystopic movies, like this and Hunger Games, and I thought the future presented here was pretty cool. I read some interviews and stuff before this came out, and I believe the director did some fairly detailed world building that didn't make it onto the screen.
I wouldn't even put this and Hunger Games into the same genre... The way the movies are presented are just completely different.