This is a really cool animation based on what goes on inside a single cell, assembling/disassembling proteins, their transport, etc. Really quite well done..
http://aimediaserver4.com/studiodail...640&height=520
If you're into this sort of thing, here's a 10 minute video of the creator of the animation talking about it. It's pretty neat stuff he has to say.
http://www.ted.com/index.php/talks/view/id/147