I love this site (http://www.ted.com/index.php/themes) and there are so many inspirational pieces from some great thinkers. I visit the site from time to time and never cease to find somehting new, thought provoking and clever.
Some of the technology type talks I enjoyed today include:
http://www.ted.com/index.php/talks/view/id/131 (stacky paper computer interface)
http://www.ted.com/index.php/talks/view/id/129 (MS photosynth and more)
http://www.ted.com/index.php/talks/view/id/125 (brain theory and computing)