Here are my nominations (strangely lacking in gender balance) for the Hugo Award for Best Short Story of 2009:
Aliette de Bodard, Blighted Heart (Beneath Ceaseless Skies, 7/30/09)
Kij Johnson, Spar (Clarkesworld, Oct '09)
Mary Robinette Kowal, Jaiden's Weaver (Diamonds in the Sky)
Margo Lanagan, Ferryman (Firebirds Soaring)
Cat Rambo, Rare Pears and Greengages (Eyes Like Sky and Coal and Moonlight)
I think the Kij Johnson story is the only one in this group with much of a chance at making the final ballot, even though (or perhaps because) it is rather a disturbing, unpleasant reading experience. Good luck to all these excellent authors just the same!