sure...
We have windows phones. After install, you make a user id. If you use your windows live ID, it pulls your info down from the cloud. After being logged in for 5 minutes, ALL of our contacts and calendar events were synced up. Our facebook and linked in accounts were live in the people pane. Our photos were propagating and I clicked my skydrive and was able to get to all of my documents.
5 minutes out of the box and it was a fully usable machine with almost zero configuration. After some theme adjustments, I was able to log on to another machine and experience the same effect only with my backgrounds and color choices following me.
It's by no means perfect and has a few things to work out still, but this is awesome. As an IT guy, I have 5 computers that my wife, two kids and I use. I was a full time IT guy at home hooking up things for whoever and re-saving links to desktops and whatnot (my kids are 2 and 5). Now, they can log in on their own with their 4 digit code and it pulls their updated stuff down automatically no matter where they are.
It's very slick and everyone loves it.