Since we're on the subject of gaming...
I just got an Xbox 360 and bought NBA 2k, Halo 3, and Rainbow Six Las Vegas #1.
I've really never, ever been a huge fan of Halo's single palyer campaign. I payed it and couldn't get into it. Online will hopefully be better. 2k is great. RSLV is awesome and, IMO, better than Halo. I've yet to play it online but I can't imagine it not being better than Halo 3 online. I love the fact that you really have to stay focused and you can't just run up to people and shoot them. There's strategy involved and that's what really keeps it interesting for me.
A couple of games I really really want to get are Mass Effect (I absolutely loved the Star Wars RPG games for the original Xbox and I've heard that the their makers made Mass Effect) and Half Life. Oblivian, I've heard, is great and I probably will end up giving it a try soon, too. The longevity of it worries me a litle bit. The most amount of time I can stay occupied with one game is around the time it took me to beat both Stars Wars games on Xbox. They were the perfect length and they weren't linear, which made them feel more immersive.