Here’s one that gets us out of the constricting box of the mouse and click paradigm.

“In this demo, Jeff Han shows off (for the first time publicly) a high-resolution multi-touch computer screen that may herald the end of the point-and-click mouse. The demo, which drew spontaneous applause and audible gasps from the audience, begins with a simple lava lamp, then turns into a virtual photo-editing tabletop, where Han flicks photos across the screen as if they were paper snapshots. (The Apple iPhone, to be released a year later, also does multi-touch — but only with two fingers.)”

http://www.ted.com/index.php/talks/view/id/65