This is an interesting piece of technology that amazed me first when I read about its release, and freaked me out when I ran the demo application. Below is the demo as available from Office Labs.
http://images.video.msn.com/flash/soapbox1_1.swfVideo: Touchless
It needs a webcam, and know more about this here.
Nice works folks!
.rm
rakkimk - the next door (so called) geek 
Hello Rakki MK
Nice – It’s getting better and better . . . .
Greetings
Maurus