Don't know if anyone has played with Apophysis (a fractal/flame rendering program for windows) but there is a 3d "hack" (or varient) that will render these flame fractals in 3D.

While I've never had the time to play with it, I have enjoyed the creations of others.

I came across this one over at DA (don't know if hotlinks work):

Here is the DA Page:

This really looked like some kind of crazy 3D intergalactic map....

-Rob A>