Finally got my Windows 7 working (amazon sent me a scratched disc and I had to get a replacement
I'm blown away by how good it looks, runs, and how surprisingly compatible it is with a large number of apps/drivers.
I like the new Windows Media Center a lot (I've got TV goin through it and it's a great DVR)
Just everything is amazing, including performance.
I liked Vista, but 7 is near perfect for me.