Fractal Flames are algorithmically generated images 
and animations.  The shape of each image is specified
by a long string of numbers - a genetic code of sorts.

You can create your own flames with the Apophysis 
interactive designer (for windows), Qosmic (for Linux), 
or Oxidizer (for Mac OS X), or Apophysis-J (cross-
platform in Java).

Or you can use the Electric Sheep distributed screen 
saver to join the collective evolution of animated 
fractal flames.

WWW: http://flam3.com/