I've always been a closet nerd, but going back to school this past year has caused me to kinda let my inner geek out, so to speak. I've been watching a bunch of great stuff on Nat Geo and History channels, and recently came across Sixty Symbols on YouTube.
(Side note: youtube is an amazing source of incredibly helpful and informational videos. I do a large portion of my studying via youtube where I learn the material faster, understand it much more clearly, and retain it longer than I would otherwise. And so far it's cost me a total of $0.00)
For anybody unfamiliar with them, Sixty Symbols takes intriguing and/or challenging physics concepts and basically has some of Nottingham's more interesting professors explain or demonstrate them. Below is a pretty good one in which the Drinking Bird is explained...
YouTube - Drinking Bird - Sixty Symbols