There are always moments during post-processing complicated composites or 3D shots where a unique and unintentional state of the image in progress really stands on it's own as an artistic entity (as show earlier this week: http://blog.adamshane.com/2012/07/anaglyph-symmetry/). While they usually never get publicized, I usually take screenshots for my own personal collection.
Here's one from the Evil Dead The Musical composite. This one happened when I switched blending modes on the color grading layer for the rear subjects. Something about the way the hand masked outlines look with gradient layer really remind me of a graffiti chalk outline… sort of appropriate for singing deadites.