Just got finished watching BSG: The Plan. Pretty good. Ties up some loose ends from the series, offers up the Tricia Helfer Variety Pack (my vote's for trashy brunette), and introduces a new minor character for one of the subplots. Lots of the show splices in footage from the series in with new scenes, so it's kind of a retrospective as well. The 2's (Simon) get a more prominent role, and Leeoben is still pretty freaky but a lot less spooky once his story is revealed.
Also, Dean Stockwell is either an exceptionally evil man or a bad ass actor, and that's all I'm going to say about that.
This is definitely worth checking out if you're a BSG freak like me.