There is a demo for BLACK by EA for the PS2. I got to try it a bit yesterday and it looks really good, I assume the Xbox version will look even better. This game is put out by EA and Criterion Games, the same force behind Burnout Revenge. There was also a demo for Star Wars : Empires at War PC available the other day on-line. I have downloaded it, but haven't got a chance to play it yet.
On a funnier note check out this video from the upcoming Resident Evil DS game. Forget what Nintendo told you, touching