Cosmic! I really like it.
an under water fractal!
Pretty "buddhabrot" by Melinda Green. I initially thought this was done by rendering the mandelbrot and then applying post-effects, however this is not the case - the homepage explains how this interesting variation is rendered. Wikipedia also has an entry on it. Sure beats the crap out of my lame asciibrot :)
Buddha brot. The process is described here.
One of the best versions of the Mandelbrot set I have seen. Very pretty.