Yes, that is an overhead projector combined with a dismantled LCD screen. Try not to think about it too much. I did and had to leave early with a severe migraine.
Photojojo has devised an awesome way to turn your phone into a mobile projector screen.
"Basically, you start by cutting a hole out of one side of the shoebox to match your magnifying glass and taping the glass on the box. Then you make an iPhone holder from a paperclip, flip the screen display on your phone (to account for how images passed through a lens get flipped), pos