For those of you who enjoyed the last one of these I posted, here's one from Brent showing a surface-like implementation also based on .NET, C# WPF and the Wii-mote:
and a more expansive version of this video in Silverlight:
These guys at Cynergy Labs have done some AWESOME stuff with these ideas - I can't wait to try some of it out myself.
Cheers Brent! Thanks for sharing this!!!