Smokey_Vol -
If you get on LIVE and want to game online, feel free to add me to your friends list. I'm usually playing Project Gotham online or Call of Duty. My gamertag is "rdank"
Also, if you haven't checked out the Live Arcade, might want to look at those games. Honestly, Zuma (Live arcade) is the most played game on my system so far. Probably PGR3 after that, then CoD2. The new marble game on the Live Arcade is fun. Geometry Wars is the best seller and also a good one.
Blockbuster on Kingston Pike (at Downtown West) rents 360 games. I think they may still be the only Blockbuster renting games. I'm told Hollywood is renting them as well. Condemned is a great rental. CoD2 is an excellent renter if you don't game online (if you do, I'd say buy it).
Sorry to hear about your bad luck with NBA2K. Hopefully you can get something else you'll enjoy.