Stephen Cumblidge , Jul 28, 2005; 03:34 p.m.
It looks like an overly expensive slide projector and screen. You can do that trick for less money. If you use a digital camera you can use a green or blue sheet as a backdrop and photoshop in whatever you want whenever you want.
Also, I am guessing that system won't work with professional strobes, so you will be forced to use hot lights and long exposure times. A projector will have a hard time competing with a flash.