idly trawling the net and came across ww.zophar.net/Files/lasermameNTSC.mpg (add a w)
basically a bunch of uber l33t types have hooked up some emulation software to a laser system to project old games - allegedly you could play against the side of a building or the underside of clouds
!!warning!! that's a 12M file so if you have a slow connection or metered broadband (what's the point?) think before you click
enjoy
edit - sorry _ I hotlinked