I just ordered, and am now waiting for, a pair of 17" Samsung 731B Syncmasters and an nVidia 8800 GTS 320MB. It's not top of the line but it's the best I've ever had. I'm really stoked to get my game on with those.
Actually though, it is part of the overall system upgrading I am going through to prepare for an eventual Vista upgrade. All I need now is a bit more memory.
Update: The whole upgrade process turned into building a completely new machine:
