As I said in an earlier thread on Windows 7, I used it a couple of months ago. My uncle is quite high on the MSFT company ladder, and had a copy of Windows 7 when it was given out to company employees as an alpha build. He installed it and I gave it a go last time I was at his house, around Christmas. I wasn't blown away. It felt kind of like an OSX ripoff, and was a bit sluggish. Maybe the latest build is a bit more polished.