I liked Looper a lot but I really expected more out of it from Rian Johnson. Have you read Godless by Scott Frank? It's intriguing how similar the stories are except one is a western and one is in the future.
TB Blue, I thought that whole thing with scaring the younger version to get to the older was genius. I guess I'm just not sure that the Rainmaker kid still doesn't just end up being the rainmaker, minus Joe.