Been playing around with this program that got posted around PSCombine, basically it takes a folder of images and combines a couple of them in Photoshop, adds some filters or something, and spits out the result. It's basically using the automator feature, but randomizing the input and processing. It's pretty sweet letting it run for a bit. It doesn't combine more than two images, which is disappointing, and being random, it spits out some bum images, but there's some gems too. Only works for Windows though, CS3 or CS4, pity.
I basically took most of my reference photo folder and fed it through, fun results. Up above are some of the better ones. I put a full flickr set up here. Go have fun yourself if you can.