Game|Shadow is a $US40 dongle and software app made by Unify4Life that turns a BlackBerry into a PlayStation 3 remote, including keyboard support.
As you can see, you plug the dongle in and pair it with the app on your phone, and then use it to control the PS3 video player or text entry system. Sure you could get the official QWERTY keypad add-on for ten bucks more and still control movies with the controller (which is as wireless as your BlackBerry, don't forget). But if you're already a fan of Unify4Life's A/V control rig, you might like this too. It's out in April. [Crackberry]