Electron microscope-ish virus rendering with color change grid. Inspired by a tutorial, but I don't know off the top of my head where it is. Software used: Lightwave 7.0, Nacromedia Fireworks. By the way, it looks better downloaded than in the sample image, the grid shows up.
P.S. I did not "swipe" this from the phpNuke theme "Virus" planned to go on sale 12/09/03. I happened to have made half of that theme.