I have always been an xkcd fan, and recently, I set about to find some of choicest comics for a spiffy desktop background. After an hour's worth of looking, I decided there was just too much and I wanted to have full access to every one of Mr. Randall Munroe's fine drawings, and I then set my sights on a program that would grab the images for me. A so called user: "Andrew" at EchoChamber.me created a cool program (for Windows) (downloaded here) that, not only, grabs every picture off of xkcd's site, but also automatically sets one of them (at random) for your desktop background. Talk about helpful! You can read the entire Forum Chat at EchoChamber here it seems a lot of people have been looking for something like this, and I'm only trying to increase its popularity. Definately a cool program, if you are into xkcd, and if you have no idea what I'm talking about, go check out Mr. Munroe's odd, but cocky humor when you get the chance.
Thank You For Your Time.