I had a few minutes to drive the Windows 7 release candidate last night and let me say that I am impressed. It is cleaner and faster than Vista with everything from gadgets to the new dock-like task bar.
I have XP Media Center Edition on my laptop that I use most frequently and I will definitely upgrade to version 7 when the full release drops sometime later this year.
I think Microsoft finally got it right. Now they have to recoup their losses from the Vista and its inadequacies.