I had the good fortune to meet Pranav Mistry when he interned at MSR here in Redmond. I’d of course seen his amazing Sixth Sense work presented by his MIT adviser Pattie Maes at TED a few years ago. But here’s a much better presentation of his work given at TED India.
From a technical point of view, not all of the ideas he’s promoting would work as well in real life as they do in the video. But the interface conceptions are really extraordinary for their simplicity and elegance. I’m a fan. Once the tech could be made to work reliably (for everyone), I could really see these paradigms catching on.