I suggest you get The Darkness for the Xbox 360, it runs better on 360 as it was an early PS3 port.
I hear the Fanatec racing wheel is PC, 360, PS3 compatible. I think its a little more, but it may be better to get a compatible version. You may also want to grab Forza 3 instead as its a marked improvement over Forza 2.
I suggest you grab some of the cheaper Xbox 360 titles as well, Crackdown should be one of the first on that list as its quite a fun actiony sandbox game.
Gears of War 1 is also quite cheap and its really fun. I played it thinking it would suck and it was a very pleasant surprise.
Tease.







