People are doing some really cool things with projections.  Take this for instance.  It's real and I'm guessing you have to stay at one place to see the true effect.  The room has to be pretty much dark as well.  None the less, it's still amazing.  Makes me wonder if the little scanner light at the beginning is required to get where all the placement of the object are before the light show begins.  Enough of trying to figure it out and let's just watch the video below.  Created by the company  Superbien from France.