I didn't know much about Runner Runner going in. I'd only seen the trailer for it a week or so previously, and wasn't particularly grabbed by the storyline or the stars. Although I have enjoyed Affleck and Arterton in their recent releases. My reason for seeing the film was simply that there wasn't an awful lot to choose from that week. This probably worked in Runner Runner's favour as I'm sure I wasn't the only one who saw it for that very reason, and I'm not sure it would have made much of a dent in the box office if it had been released in a week when say Captain Phillips or Thor 2 were out.
I enjoyed it enough but I must admit that it's not the most gripping plot or the greatest acting on display. I think Affleck's best work these days is as a director, or when he's directing himself. I don't know if that means he tries harder or if the other directors he's working with aren't very good at getting the best out of him, but he certainly wasn't at his best here, putting in a rather cheesy panto villain performance. Arterton had little to do other than look pretty, which she's great at but she's capable of so much more. Timberlake for me is watchable but can't really carry movie, and with Timberlake as the lead, this leaves Runner Runner in a bit of a stalled state.
It's watchable, but the twist at the end is underwhelming. I'd only recommend it if you don't have something better to watch. 6.5 out of 10.