Hey, we didn't mean to have two back to back animated gif posts. It just happened that way, okay? So don't blame the nice people at Animated Albums. They work hard to give you the rock-in-motion that you need.
There's not a lot we can explain, of course, since it should be pretty obvious. Album covers, set into motion. That's it. But there are several pages of Animated Albums for you to enjoy on the other side of the link, so we think you should check them out.
Postscript: we found this thanks to the fantastic WFMU Twitter Feed.