This is something that I remember doing a while back. Basic principle is go to your desktop right now, and take a screenshot of it. Save the screenshot, upload to the internet and post it to the internet so we can see how cool/weird your desktop is.

This is currently what I am rocking

I tend to keep my desktop empty, the only things I have left at the top left are projects I am working on. Namely the Mario Kart High Score Challenge for June, and the Final Fantasy X HD Lets play.
#lolshamelesspromotion

Beside that I have a tales of Vesperia Background, and a Persona 4 Rainmeter Skin that never really gets used properly but is cool to look at.

What does your desktop look like? Care to share with the community?