Einstein Light: Terrific and fun website!

[Sequoia]

Einstein spent decades trying to understand relativity. Thanks to the efficient folks at the University of New South Wales, you can do it in just five minutes. The site is divided into five sections: Galileo, Maxwell, Einstein, Time Dilation and E=mc2, each featuring a one-minute (or less!) multimedia movie on a major player or principle of the spacetime game. Hosted by fast-talking physicist Joe Wolfe, the movies offer quick overviews and quirky animation, plus links to more in-depth articles on the topic at hand.

http://www.phys.unsw.edu.au/einsteinlight/