Windows Phone 7, the best walk through
This is by far the best walk through of WP7 out there on the internet.
It shows a fast and responsive OS with features such as Bing voice search, Bing (fast) maps, e-mail browsing and managing, multiple calendars and e-mail accounts, a great Office experience coupled with nice pinch to zoom gestures.
I also like the Music hub and I am eagerly awaiting to see a more complete Xbox Live hub, and you can see the browser which has a very decent behavior.
Not all is great, and although the programs list has some fancy animations, I think it might get hard to find an app if the list is loooooooooongggggggggggg, unless you search for it, hope they improve this soon with lets say an alphabetic tab on the side, what do you think?
Nevertheless, things are indeed heating up, and I just can’t wait for launch time 
So go ahead and watch the video which I guarantee you it’s well worth watching.