qamar linked to this TED video. Pranav Mistry is a student at MIT who has invented a device that projects data onto any surface, resulting in a very Minority Report-like interaction. Look at a boarding pass and it will connect to the Internet-enabled mobile phone in your pocket, retrieve flight information and project it back onto the ticket for you to read. Draw a circle on your wrist and it will project a watch. Look at a book and it can retrieve Amazon reviews and ratings. Look at today's newspaper and it can update the story and add video from the paper's site. I'm not quite sure how they're doing the tag cloud trick when he looks at a person... it's not face recognition... anyway, the whole thing is intensely cool. Of course it is, it's being demoed at TED.