PhotoSketch is an automated photo montage creator that some very smart guys at Tsinghua University in China outline in a research paper. To create a photo montage you just draw outlines of objects and tag them with text. The system takes your drawings and finds images on the Internet that would blend together well. A couple of clicks later you get something that looks fantastic.
If this software ever hits the market I’m sure Tablet PC users would spend countless hours creating montages.