Take any one of the fandoms you know I write AND give me a type of AU (space opera AU, pirate AU, superhero AU, etc.) or a time period (Ancient Rome, Feudal Japan, Victorian England, etc). I will then explain what story from that fandom I would write for that AU.
I'm going to extend this to say any fandom you know I like, not necessarily write for.
(you don't have to put this meme in your LJ just because you reply - does that help?)