I know there's probably a lot of Windows pooh-poohers who read this forum, but I just installed the PR of Windows 7 on my laptop and am finding it to be very very good so far. In fact it's the nicest version of Windows I've used to date, better than XP and far better than Vista. The install was painless, it downloaded all the drivers I needed for my laptop immediately and everything works perfectly. It's very nice visually, very smooth and snappy, boots quickly and with only 45 or so processes running out of the box (compared to the 70+ I had on Vista).
Everything I usually install on Windows works fine, no compatibility issues so far. Some really nice features, like the ability to shake a window and have all the other windows minimize. Shake it again and they come back. Easy to snap two windows to either half of the screen, although it doesn't work how you'd like if you're using two monitors like I do. I think this is the first time I've tried a new Windows and not thought "what the **** is this??"