This is just a fun/stupid thread where everybody posts images of their desktops. So many forums have a similar thread, so why not start one here?
How to capture an image of your desktop: If you're on Windows, you can capture the image of your desktop by holding down the flying window button and pressing the "print scrn" button, then pasting into whatever image program you have (such as MS Paint or Photoshop). On a Linux machine, there's programs such as KSnapshot that will capture the image for you. Mac users... well, I dunno what to tell you. You'll have to figure it out on your own.
Anyway, here's my current desktop.

The wallpaper is of the vampire Henry Fitzroy from the TV series
Blood Ties. It's on my new Linux-based operating system, Kubuntu. Yep, I told Bill Gates to go to hell, and my life has been a little easier ever since.