Rihanna Hops Aboard "Battleship!"

Ain't no sinkin this ship now!
A little out of this world herself, popstar Rihanna has joined the cast of the upcoming boardgame-based, sci-fi flick, Battleship. Yup, they're making a whole movie out of an old game with little dopey boats and pegs, but with Rihanna set to make her feature film debut, it's gotta be good!
Here are the deets: The crew of the battleship take on some space invaders (umm, totally different from the classic game!), and they're fighting on the high seas to save the world. No word yet on what role Rihanna will play, but would it surprise anyone if she was an alien?
The flick doesn't come out til 2012, but we know one thing: we hope she produces the soundtrack!