I was 'excited' about Vista coming out since it was new and different, and I am a 'new tech' junkie. But the glamor quickly faded, and I was very caught up in other things so didn't really pay it much mind.
Win 7 on the other hand has got me excited like no other microsoft product for a long time.
I tiwll not replace my default OS, which is OS X, but I may definitely find myself booting into Windows more often, and will have no hesitation recommending it to friends and family. I really like what Microsoft is doing these days. 7, Zune HD, what they are doing with the 360, and the Microsoft Labs stuff is all looking great.