My fiance just got me a subscription to Game Tap for my birthday. For the price of one video game and change, you get access to a library of over a thousand games for a year. In my opinion GameTap is a must have for gamers. I thought the games would be older, and there is a lot of older games there, but there are newer ones, like CIV IV and some newer FPS.
Don't take my word for it, check it out yourself. www.gametap.com