Just been with me mam to see The Boat That Rocked, which was good fun with some humour that seemed incredibly meta (I suspect deliberately - Jack Davenport playing a character who's trying to catch some pirates?), and had me laughing in probably rather inappropriate places.
Also thought Terminator Salvation and Star Trek looked worth seeing, even though a.) I've never seen any of the other Terminator films and b.) I'm not much of a Trek fan.