I loved Holly Black's White Cat, Karen Healey's Guardian of the Dead, Heather Tomlinson's Toads and Diamonds (although apparently her grasp of tropical parasitology could be better), and Alaya Johnson's Racing the Dark, The Burning City, and Moonshine.

I'm looking forward to Pierce's Mastiff and short story collection, Malinda Lo's Huntress, and anything Johnson might publish in 2011 (I'm not sure what her upcoming publication dates are). Bitterblue if it comes out.

...gosh, will I read anything besides YA fantasy next year or is there no going back? :D