Holy crap. http://ge.ecomagination.com/smartgrid/?c_id=Yahoo#/augmented_reality Try it. Gimmicky, but awesome.
I'm pretty sure some baseball cards are coming out with something similar to that, except you can use the players to actually play video games on your desk! http://www.engadget.com/2009/03/09/topps-launches-3d-live-baseball-cards-video-cards-on-deck/
This is also like The Eye of Judgment for the PS3. http://www.us.playstation.com/PS3/Games/THE_EYE_OF_JUDGMENT