Education & Educational Technology Videos

There seem to be certain videos that make the rounds at education and educational technology workshops.  Below I'm compiling some of the videos that I have encountered, either through workshops, friends, e-mail, Facebook, etc.  

If you can't find what you're looking for here, then try this list of 90+ Media Literacy videos: http://couros.wikispaces.com/TechAndMediaLiteracyVids