DeviantART user mxmlmn took a simple wallpaper resembling circuitry and used Rainmeter to create nodes that display little bits of information. A few other customisations keep this desktop minimal and useful without ever getting too distracting.
Want this look? Here's what you'll need:
If you're an OS X or Linux user, you should be able to use GeekTool or Conky (respectively) to recreate the desktop customisations in this look for your operating system of choice. If you do, be sure to share it in the comments!
Desktop 02.21.11 [deviantART]