Click to viewAs soon as Christopher Nolan decided to put the Joker in a nurse's uniform in The Dark Knight, the countdown to this image had started. But the artist behind it, Ponderosa, doesn't just focus on Joker/Two-Face slash. She's also done similar portraits of the stars of Supernatural, Iron Man, and... somewhat disconcertingly, Simon and River from Firefly. Under the jump, however, more Dark Knight images, one of which is NSFW. [Destiny Interrupted]