I thought I was being clever by painting ponies on random trading cards...
But this dude is painting pop culture stuff on original cabinet cards!
The artist bit of me is all squee but the collector in me is all nope nope nope nope NOPE. This guy does these paintings so well that I just might need to hide the really old vintage binder for a couple weeks lest I become inspired.
Here's one for Night Owl: The Art of Alex Gross - Mixed Media
Lots more painting awesome things on other things in this post what I ganked this from.