Web Live Wallpaper is another geeky one. It's basically a moving "Voronoi Tesselation". If you care about what that is, each cell contains all the points closest to the main point. The lines represent all the spots that are equal distance to another point.
As with a lot of stuff in math and nature, all that technical stuff just ends up making something cool looking. In this case a cool looking web. This wallpaper contains quite a few settings to control colors, and you can also make the points move via touch.