How do you sample a juicy Mango without actually catching cooties from touching a Windows Phone? It's easy -- just point your browser to http://aka.ms/wpdemo, and you are presented with a sparkly representation of the Windows Phone 7.5 Metro UI that you can touch and swipe.
I'll admit it. I went and took a look at Windows Phone 7.5, and then I washed my hands with a sterilizing soap, and put in eyedrops in an attempt to get the UI out of my eyes. But it's well worth a look, just so you know what passes for a mobile operating system in Redmond, Washington.