The touchscreen interface is useful if implemented properly, as in the iPhone and iPad. Many digital cameras also now sport a touchscreen interface that is very usable.
Mark Micire is a graduate student at the University of Massachusetts-Lowell and, for his Phd thesis, showed a demo of his swarm-control interface using Microsoft Surface, which is an interactive tabletop.
From mmicire
source PopSci
There are examples of this tabletop interactive technology in actual use and in movies. One I remember clearly is in the movie “The Island
There is a game on the Nintendo DS Lite called The Legend of Zelda: Phantom Hourglass
From gamelegend