Go! Read! I merely asked for Dawn, Xander, chocolate sauce and a bunny girl outfit, and got this dark, twisted and angst filled little beauty. Oh so definitely NC-17, btw.
And while I'm busy pimping, let me mention the Buffybot stories by speakr2customrs : "I was made for loving you baby" Things go very AU from the start of season 6. And all from the bot's POV. Superb stuff.
In other news, inspired by buffyverse1000, I've almost finished a Master/Mayor ficlet, and my long worked on Amy/Anya fic.