See the thing is that whenever new consoles come out, they usually kick pc's ass. Take Xbox and PS2 for example. They owned the pc but like a month later the PC came back with a new nVidia card (forgot which one). Anyways, I have no doubt that the 360 and PS3 are going to better than the computer when they come out. Maybe a month after the consoles' release will PC completely own. As for me, i prefer computer for several reasons. You can easily download patches, mods, etc. You can modify game options like resolution, shadows,AA,etc. And, the PC is being upgraded every 15-17 mins approx. (a stat i got from my cousin).
but I'm sticking to PC cause PC games completely own. PS3 and Revolution are bound to be good. PS3 mainly because of MGS4 and FFVII. Revolution because nintendo kicks in games. I don't like Xbox at all.