We could be heroes, by missyjack
I read it yesterday, and I'm still quite in awe. It's maybe not fiction in the usual sense of the word, it's intertextual, meta-fiction, and it's funny and a little heartbreaking and epic with it. I suppose it's probably as much about us fans and what we do with stories than it is about the Winchester boys, it mixes canon, fanon, and popular culture...it's worth reading, because it's in a niche of its own, and oh yes, I loved it. :)
John Winchester is Luke Skywalker’s real father.