1) Boots very quickly
2) Like the way you can switch open tabs by hovering he mouse.
3) IE8 painfully slow on some sites.
4) Driver support appears to better than that for Vista (work that one out!)
5) About to tackle SLI (should be fun!)
Then I will try a game.
Oh, and I'd better provide my first impressions feedback to the folks in Redmond I guess.