For such a run-of-the-mill show,
"Supernatural" has a surprising amount of quality fanfic.
Written in DreamsPoignant and angsty with a dash of humor.
Bitten -
Part 1 and
Part 2 Brick and MortarPoignant and angsty with a dash of humor and a kitten.
The Wreck (That Almost Destroyed Dean’s Life)Mostly humor.
And now, the crack!fic. *grin*Man, I Feel like a Woman -
Part 1 and
Part 2A hysterical, tastefully done gender-switching fic.
The Winchester Brothers in the Land of FicDean and Sam are very much aware that crazy people are writing about them.