...Because cashew wanted more reading material. Not all of these are completed fics, and I'm aware our tastes differ, but here's a few I've come across recently:
Author: Shivani Blue (at ffnet) - The cool thing about this author is that she updates very frequently. She also tends to write pro/powerful-Harry fics, so if you hate the character, this may not be for you. But try a few anyways.
* Induction - Completed Fic - HP/SS - post OotP, featuring a lot of hypnosis fun
* Forsaken - WIP - HP/DM - post OotP, featuring Dark!Harry (or rather, Harry joining a NotAsEvil!Voldemeort) and Evil!Dumbledore
* Crumbling Pedestal - WIP - HP/SS - My current favority of the bunch. It splits off into AU from around the fourth book. Features time travel, the Founders, Slytherin!Harry (literally!) and progressing nicely. The beginning starts off a little awkward, but things get better once we get into the past, and my favorite parts are after we return to the present-ish.
In Memory I, by Becka - WIP. This AU features a young Harry brought up by Death Eaters... but not the service of Voldemort. Features Reedemed!Death Eaters (especially love the characterization of Lucius), Revolutionary/Slytherin!Harry, and other unique storyline flavors. The author says it will eventually be both HP/DM and HP/SS. I must admit that for once, the latter pairing leaves me boggling in this case.