I think multi-touch screens like are just screaming to be popular.

Imagine the dry erase board in the average classroom now being a digital screen, you can draw on with your fingers, save, and project to other places. I know there are some companies experimenting with that business model now with dry erase boards on wheels, but what if what you were drawing on your desk/tabletop?

I don't remember what movie it was, but I think it was Tom Cruise playing a character where he had to kill people to prevent them from killing others. In that movie was a scene where his workspace was a bunch of glass desks with projections of his workspace on them. A smaller scale example was in The Island. I'm guessing the first implementations are going to be extensions existing touchscreen use, like food service. If I were a capital investment company, I'd be looking for someone interested in developing really cool touch screen stuff.