Vista
I am now fully operating on Vista, and I have to say, I am very impressed.
I can already see small things that will resolve most user issues, such as file renaming keeping the extension by default, or the security pop-up before anything important happens.
Unfortunately, it will be at least 2 more weeks before my test server gets here, so testing the whole Exchange Vista Office (EVO) combination that MS are banking on will not be possible for a while yet.
Kieran