Normally, I don't make threads about games, but this one has me anxious.
http://www.audio-surf.com/
Apparently, it was available for download for a while (beta), but I guess I missed the boat there.
EDIT: Looks like you can still nab it from GameSpot
http://www.gamespot.com/pc/driving/a...ml?sid=6184830
It's basically a game that creates levels depending on what song you choose to play. It's sort of weird to explain, so just check out the site. Personally, I think this looks pretty damn fun and I'll have to check it out in February. I'm not big on the whole 'competing' aspect of it (scores) but I think it'd be neat just to compare something like Jazz to Metal :D