Just to add to my list of app ideas I'll likely never get around to (notable entries include an app with an algorithm for translating light frequency to audio frequency in such a way that one could listen to images, an app for generating sheet music from bird song, and an app where you trace out as many "faces" as you can find for a given high def nature photo) … how 'bout an app where you start with a given image and, being constrained to the existing collection of pixel values (but not their initial locations) see what you can create out of them by moving them about.