WOW!! This is awesome!!!!
OH MY SWEET HOLY GRAHAM CRACKER!!! I second Cecilia's HOW DID I NOT KNOW THIS?!?!?
i don't know what's weirder, the history, or the fact that this discussion was right on top as i headed here to basically ask the same question.
I know I could read his backstory, like Joss' official one but I don't feel like spoiling the mystery. All I know is that he definitely is NOT going to the Special Hell and that's all that matters.
They made a comic about it now. It's called The Shepherd's Tale and reminds me of Memento. Well worth the read if not the purchase.