I am not a big fan of live wallpapers. They provide me with eye candy for a few minutes before I completely lose interest and start playing Cut The Rope. However, sometimes live wallpapers can be informative or so compelling that they deserve a second look. The Neon Microcosm Free LWP is one such live wallpaper that is not particularly useful but is aesthetically pleasing.
This live wallpaper hurtles you around a colony of glowing cells and if you purchase the paid version you can also tap the screen to generate new cells and select their colour.