Billy from Respeed is considering restarting the points challenge. I participated in this the last time he did it, something like two years ago, and it was a lot of fun.
Basically, you register with Respeed, put a couple of small and tasteful decals on the quarter window, and report your placement in any of several different types of events. Depending on how you place, and how many were in your class, you are awarded points. The winners receive free stuff at the end of the year.
You also receive a discount on parts too, which is a great help.
If you do any sort of racing (autocross, rallycross, track racing, etc.), then this is definitely something worth considering.