no one's mentioned the nudity
I agree with the reviews that I've read so far that Tommy Lee Jones and Charize Theron do a suberb job. Susan Sarandan could have had more time on screen.
What I haven't seen mentioned is the strip club scenes. Just so you are prepared there is a scene in a strip that in my opinion goes on way too long and shows too much nudity. They filmmakers could have gotten the idea across with just a passing glance at the scene. So whoever you go with, make sure you are comfortable watching lap dances with topless dancers and such before you go.