I'm somewhat hopeful about the laser tech, but the difference between a laser and a LED is in many respects semantics. The power level of a "laser" driven small projector is still probably far too low in lumens output for our purposes.
The Mitsubishi pocket projector is about 80-100 lumens. It's just way too low powered for gaming.
The Sanyo short throw Jody posted with an updated price is, otoh, The Bomb. This patented technology is absolutely ideal for gaming. The throw distances required to fill a tabletop are a matter of mere inches - and yes - this puppy can EASILY be mounted under a plexiglass table surface. At only a few inches from under the tabletop too, the projector can be completely out of the way. The table is then simply "live" @ 2000 lumens.
I completely agree with Jody. At $2,600.00, for what that projector can do, this thing is coming into justifiable dollar range right now. There are people who purchased projectors on this thread for about $2,200.00 just two years ago. Add the Sanyo short throw and a Wiimote hack?
I'd say we are coming up - and damned fast too - on the ULTIMATE Take No Frikkin Prisoners Gaming Projection rig.