MonteyB

Accenture Technology Labs has developed a completely scaleable, multi-user touch system. First of its kind, it can make any surface touch interactive, while allowing multiple people interact with the image.

I'm a developer for the 'Wall'. We have long thrown around the idea of developing a gaming application (we currently have something similiar to Duckhunt where you shoot toy guns at the glass), but we have neither the time or budget. But hopefully someday!

Check out a demo here:
http://wall.accenture.com/demos.asp