My report on this:

Hi all-

I was swayed by the rave 20% claims as well, and scratched my perfectly good and "legit" Windows XP + SP3 install in favour of W2008 WS edition (evaluation.)

And before you reply to my comments, get this, I am a legit owner of a Vista HP license as well. That box has been lying unused for a long time now :P

I thought the performance in gaming would have taken a good turn.... but alas, no such thing. The FPS is STILL crappy compared to XP in Source Engine games (like CS: Source.) I for now will be moving back to my XP install tonight.