If you've never seen Marco Tempest's technological illusions, drop what you're doing and watch: with a deck of cards and a head-tracking augmented reality camera, or even a set of three synchronized iPhones, he can tell a impressive, cohesive tale while his non-stop magic tricks tie in to every element of his narrative, and do so in real time. At this year's TED conference, he took his ideas to the next level: performing on stage with a motion tracking camera rig (a la the Microsoft Kinect) he explains how magic fundamentally entertains us like other classical forms of art, while turning virtual pixie dust into a series of ghost-like images only visible in a separate screen. See for yourself in the video below.