It has to be the greatest invention of all time. I mean, I would have never bought Condemned, LOTR: BFME II, or Dead Rising if I hadn't downloaded the demos over the market place. We really are lucky as gamers to get the chance to play demos (That would eventually be playable to all gamers thanks to OXM) that would influence our decision on whether that game is good or not. Thank you, Microsoft! Oh, and go buy Dead Rising, It's sick!