FPS and RTS mostly. Yeah, I was into Counter-Strike back in high school like just about everyone else I knew at the time, but I haven't seriously played an FPS since then. And I just plain suck at RTS games. Probably because I lack patience and strategic thinking etc.
Racing games are actually perfectly suited to my tastes, which apparently goes against the grain of quite a few other posters in this thread. I just spent like two hours in practice sessions in F1 2010 going out for a few laps, pitting, adjusting ride height, camber, toe, tires, wing settings, then going out again for a few more laps. I ended up setting a personal best two tenths of a second faster than my previous and I absolutely loved it (in what is still ultimately, a horribly bugged and ruined game). I like the arcadey racing games even more though kart racing is sometimes a different story.