I have never been a fan of those zany art filters (the ones that dominated the early photo app offering, not to mention a few photo mangers). Basically they look really lame, its the mark making that just isn't there, no personality no passion. However I'm not against appropriate image manipulation and I'm interested in and infavour of dipping a paint brush into a photo.
Experimenting with Autodesk's Pixlr App, with a watercolour style render and torn paper edge. Perhaps we are starting to get there (check out the "brush marks on" the wing tips)?