Anybody still playing Fallout?
I'm up to 550 achievements but my game time is 70 hours!
Also, I'm playing it on windows as it was a lot cheaper than the 360 version and with Games for Windows Live you can still get the gamer points and add them to your 360 score.
GTAIV is coming out on Windows next week and it also has GP so I might pick that up if I can get it cheaply on eBay (even though I already have the 360 version I'm looking forward to playing it with better graphics and framerate).