I actually love all the genres described in the poll, but my most loved in probably FPS. There is the aiming, the speed, the strategic side to it. It's all good fun and really gets me going when I'm on a roll.
I also love RTS although I don't play so much of it at the moment. It's a great type of game to go for, as it gets you thinking a lot in terms of strategy. It's basically battle of the strategies, but it also depends on how fast you are and such.