Combine Wikipedia, Flickr and random and you get the next hit music album. If you do any sort of graphic design and need a quick side project, this is a fun one to do.
Watch out for vanishing feeds. My Feedburner blog feed was returning a 404 File Not Found error when I tried accessing it through PHP, but showed up fine in my browser. It took a while to figure out what was going on. If anyone else is having the same problem, hopefully this article will help.