Sean just came by to ask me to google "Mandelbrot Set". Of course I've never heard of this term, the only brot I know is German for bread, so I'm guessing this is a German name?
Sean says, "A Mandelbrot Set is a fractal that goes on forever. When you zoom in the Mandelbrot Set a lot, you can see a tiny Mandelbrot Set in the centre somewhere. And there is another Mandelbrot Set in the tiny Mandelbrot Set. And it goes on forever."
We found some Youtube videos on the Mandelbrot Set, some were better than others. Here are a couple we really like.
More about Mandelbrot Set from Wikipedia.
I was wrong about the name being German, Benoit Mandelbrot's a French mathematician born in Warsaw, and is best known as the Father of Fractal Geometry. More here.