Xbox Games on Demand is a great service for those who are wanting to play games without having the hassle of discs. I for one am over packaged games and would love to be able to download games as soon as they arrive on store shelves. Sadly, we are not there so in the mean time, Sega is providing us with two games we can forever keep on our hard drives. Aliens vs. Predators is available to download right now and Bayonetta will be coming next week. So take your pick, you can either shoot aliens as a marine, or shoot aliens as a hairy Sarah Palin lady lookalike. Either way, you will have it forever and ever, or as long as your Xbox is still going.