Two stories that impressed me especially:
http://deeply-horrible.livejournal.com/9539.html "Evan Ames Rises Up" : I held my breath and wanted to shake some sense into Kingsley.... and the style follows the content so well!!
http://deeply-horrible.livejournal.com/10811.html "Hrth'a'tet" : very clever and Slytherin, and a very interesting Bloody Baron as a second character