Is there a way I can get a Windows 7 Phone  UI on my Android device? Is there an App/Widget/Custom Rom that gives you a Windows 7 Phone-like User Interface?

Of course I don't need the Microsoft-specific stuff such as XBox Live, etc.
But instead of app icons for phone/msg/settings/etc, you have the nice big ... windows... that you can slide around instead. 

I hope its not too subjective. Basically I want the Windows 7 UI on my Android phone (even just in the home screen).
There is an alternative launcher that purports to give the look-and-feel of Windows Phone 7. I can't imagine it's more than "skin-deep", however.

Some information (and a video) here: http://phandroid.com/2010/12/09/turn-your-android-phone-into-a-windows-phone-7-with-this-metro-ui-launcher/