GameTap recently passed the 1000th game mark, and they're determined to lure you into their subscription service with rotating free games. From now until Dec. 31, you can play Psychonauts and several entries in the Hitman franchise, among many others. Now, if they would only make the player compatible with my ATI video card and crappy, out-of-date Alienware drivers (teach me to buy a "gaming" laptop)...
