I was just looking into M/K fic and rereading some of these yesterday. My big one remains Ghosts&Lovers though...I used to reread that story every year :)

And while there's the beating up Krycek issue, there's also the positively bizarre torture in general. I can't recall another fandom that had to create a Torture Archived with serious ratings :) [Though, of course, everything pales next to Hannibal!!!]