It's just a little tricky to use but I made it as simple as I could without allowing people to post anything malicious. To use it, copy only the name of the page, without the extension and without the "http://ted.com/talks/", from your URL bar. Paste it in the posting box, highlight it and hit the button. For the video below I used charlie_todd_the_shared_experience_of_absurdity.
The page URL is http://www.ted.com/talks/[highlight=#ffff00]charlie_todd_the_shared_experience_of_absurdity[/highlight].html
Since yesterday was the anniversary of the No-Pants Subway Ride,