Well I've got nearly every DC game I want other than the 3 shmups I have on pre-order, and a couple of fighting games to get. Oh, and I fancy a bit of Maraca shacking action too, strangely. I've also recently decided my NGPC collection is about as complete as it's getting, as I have all the games I want and will actually play.
So I'm currently rebuying all the NeoGeo games that I really want in AES format. I'm seriously considering a PSP for the fighting games too...