Found my old Microsoft Sidewinder Force Feedback Steering Wheel the other day, so I reinstalled Carmageddon TDR 2000. Great fun, but the force feedback was spotty. Thankfully, the internet was good enough to provide me with Flatout, Need for Speed: Most Wanted, and Need for Speed: Underground 2 (Jin's recommendation). Haven't played the latter yet but Flatout's a ton of fun and NFSMW is nothing short of beautiful.
I'm also in the Auto Assault beta (Car MMO) and just now bothered to start downloading it, which was apparently a bad idea since Penny Arcade's AA deal is happening this weekend so bandwidth is SUBOPTIMAL. But hopefully that'll be fun and work with my wheel too.
I guess talk about your favorite racing games and/or setups!