Hmm. While I think all the stories hit the theme, I ruled quite a few out of the running for a vote because to my mind they failed to hit the genre. As I mentioned earlier on in the thread, I could accept a story that contained a myth from a fantasy world, but not something that was simply a fantasy story, and while I'd be hard-pressed to say where the line fell (I think it's to do with the telling and style as much as anything) for me rather a lot fell the wrong side of that line.
Nonetheless, I've a sizeable shortlist, and several more only just failed to make the cut:
Culhwch -- Keep Your Truths In Your Shadow
Elckerlyc -- The Creation of Shadow
Hugh -- Monkey
Luiglin -- Without a song of his own
M. Robert Gibson -- And Shadow Fell
Margaret Note Spelling -- Shadow Play
mosaix -- The Fox and the Rabbit
Peter V -- Escaping the Labyrinth
Victoria Silverwolf -- The Artisan
Some very clever and very beautiful stories there, but my favourite as soon as I read it was Brer-Rabbit-meets-Aesop so my vote goes to mosaix.
Many camel-shadowed thanks for the lovely mentions/shortlistings Starbeast, Shyrka, elvet, Hugh, Abernovo, D3athw4lker, CC and Daysman, and great lawyer-drafted contractual thanks for the wonderful vote Vince, and ditto for the stealth votes Pedro and MRG!