I found this little application that emulates the Windows Mobile 7 Mango OS on Nokia N8. I always wondered, how the new Windows Mobile 7 Mango OS would look on Nokia N8. In fact the emulator has few basic functionalities as well in case you seriously wish to use it. Some of the basic shortcut functions included in the emulator are phonebook, dialler, contacts, menu, calendar, sms, email, Nokia Store, browser, music player and camera.
I must say that Nokia N8 would have been a clear winner had Nokia released the phone with this OS. Anyways, there is a paid app that you can buy from Nokia Store if you want the Windows Mobile 7 shell on your N8. It is an addon with SPB Mobile Shell.