When I first heard about the film looper I was really excited. One guy's job is to shoot a person as soon as they get sent back in time. Then his future self comes back and escapes. So the first half of the film was both exciting and interesting. Some interesting time travel paradox's were set up.
However, the second part of the film involved him waiting at a farm while his older half went on a rampage to try and change the future. I was disappointed with the final scene. It was just so obvious and corny.
You have to admire Bruce Willis. There was a recent article in the guardian about him noting that he can still bring in audiences to a firm, while other older action stars can not. He is not afraid to look old and a bit broken (but still hard).