Me, I bought vista.
I'm a fan of media centre & now instead of six or seven clunky boxes in the corner of my living room, I now have one of these winking at me...
..and one remote control for TV, Videos, DVD's, Pictures, 700 albums, a constantly updated tv guide & more besides. Vista ain't perfect - ask anyone who has a creative soundcard & you'll soon see why, but it's more intuitive than XP, definitely more stable & improvements in DX10 are worth the money on their own. So the usual crowd can thumb their noses at MS & blather on about Linux & Unbuntu, but I'll paddle Bill's canoe very happily thank you. Oh & I bought Vista home premium OEM for 60 sheets & you won't find that hard to hunt down either.