I used to follow this like a bloodhound for a number of years; I always made sure that whenever I upgraded my system I'd have had my ear to the ground ready to pounce on a new graphics card as soon as it was out on the streets. I gave up on all this after my last purchase in 2006 (a Radeon X1900XTX) when I saw the trend for multi-GPU systems and yet another CPU socket type in the works, and decided to quit the arms race.
Now I'm planning on buying a Mac Pro, and although I know 'standard' graphics cards aren't supported in these, there are hacks out there that'll work with them. The question I have is, what's the next big thing around the corner for us? As I understand it a GeForce 8800 Ultra is about the bees knees today, but is there something big from either the green or red corner waiting to pounce upon us?