I want one:

Stealth cloak (http://projects.star.t.u-tokyo.ac.jp/projects/MEDIA/xv/images/oc-wired.mpg) (Vid - just left-click)

Check out the inventor, and his other projects: Susumu Tachi (http://www.star.t.u-tokyo.ac.jp/~tachi/)

There's more vids like that under "Optical Camouflage".

looks like he is just moving in front of a projector machine...

i saw it on tv...hes infront of a projector but there is another projector behind him so that there is no shadow behind him..

if you read about it in the second link it explains that yes it is a projection. first a picture is taken of the scene and then the picture is projected on the original background. therefore it is unnoticable until someone walks in front but then it just makes them look transparent.

yeah they just showed it a couple weeks ago on the discovery channel.

Interesting. I wish I had caught that on Discovery.