Johnny Lee demos his amazing Wii Remote hacks, which hack the $40 game piece into a digital whiteboard, a touchscreen, and a head-mounted 3-D viewer. A multi-ovation demo from TED2008.

These hacks are potentially very disruptive (in a good way). Think cheap educational tools for classroom interactivity. Similar forms of touch/interactive screens require a special surface that cannot be simply activated on demand, like this technology. Weee.