I presented this application during the MIX11 Day 2 keynote [http://channel9.msdn.com/Events/MIX/MIX11/KEY02?#time=91m49s] to demonstrate the new 3D features [http://channel9.msdn.com/events/MIX/MIX11/MED06] in Silverlight 5 along with a few other new Silverlight 5 features including RelativeSource