I ran across three great pictures that I thought would make awesome desktop backgrounds for my computer.
I am presently using this one. X-ray of a group of raised hands. Despite the med sized pic, it stretches real well for the full screen affect.
Just switched from this one, which I had centered with a black background. "Boom stick" from the movie Evil Dead.
I will save this one for Halloween.
If you have a cool pic that you use for your background, post the link!