This is a tiny video I put together to illustrate the idea that a certain image that I created was based off of a very simply animated oval. It also does a rather nice job of showing off what After Effects' "Echo" filter can do. The math in the title of the piece basically tells the oval to move up and down smoothly, which just happens to be while it's doing some rotating around a few different axes.
The high quality original image can be seen at: twitpic.com/2olh3g
Music "Galaxia" by Ferry Corsten, used without permission.