It was okay. Kind of played out like Californication as a movie - similar in theme with the sex addict lead character. I didn't really like him too much, the actor or the character. It was watchable in a dark way, but not something I would like to watch again, and I generally like dark/twisted themes.
The best thing for me was Kelly McDonald. I seem to have caught a few of her movies lately and I've been quite impressed with her. The flashbacks to his childhood with his mum, played by Angelica Huston, were also fun to watch.