Here's an awesome work of art by Jose Emroca Flores, found at Gallery Nineteen Eighty Eight. I stumbled upon it through I Am 8-Bit, in their art section. Of course the print is sold out, with it exhibiting so much badassitude.
I do enjoy the sexy princess, and the not-so-fuzzy world that Flores has envisioned for his Mario. Maybe there should be an M rated Mario game made, looking just like this. Nintendo would never do it though, so it would have to be homebrew.