The trailer for Film District’s pending romantic comedy, Playing For Keeps, tells us one thing right off the bat: Gerard Butler is still firmly interred in rom-com prison. The single most interesting detail here is that for once he’s not being forced to play American, which lets the film have a little fun with little kids and British pejoratives. (Listening to little children scream “wanker”, for various reasons, takes me back to childhood. It’s a long story.) I don’t know if that sells the film to anyone beyond its core audience, but it’s a change of pace. Have a look… Playing to the norms of the genre, Butler plays a has-been…