An oldie, but a goodie, is this video that attempts to explain the concept of extra dimensions. From the website http://www.tenthdimension.com/:
Random bonus: The Hierarchy of Beards. That's why I've given up ever trying to seriously grow a beard. If your beard doesn't look like one of those, you can't pull it off and you probably look like crap.
Update: That other video was putting dumb Google ads in the video based on my blog content. That meant it was advertising for stuff I don't want to see advertised.