The Tourist.
It's somewhat slick, has some gorgeous visuals of Venice, and is just a touch silly. Depp and Jolie don't have great chemistry, but they make it work as best they can. Paul Bettany is great as the obsessive Inspector, and Steven Berkoff doing another good turn as a somewhat chilling and disturbing crime lord. It does feel like they've tried doing a call back to the classic Cary Grant era style of film, but haven't got it gelling quite well enough.
But still, I think it's one of those guilty entertainments.