Ok, I know this is going to be a pretty silly question, but...

I recently visited a movie theater that had what appeard to be a LCD
projector hanging, pointing downward, from the ceiling. It was
projecting images of floating popcorn kernals on a slightly raised
platform. The kids around would step on the images of the popcorn
kernals (acutally stomp is more appropriate) and the kernals would
pop. If the popped kernels were stomped on, they would split into two.

I am familiar with SmartBoard technology, but I have never seen a
platform/projector that was designed for this kind of abuse. Does
anyone know who manufacturers this type of projector/feedback system?