I wasn't planning on blogging about this until later, but since Miles pointed out that I'm being pretty gloomy lately I decided to go ahead and mention this now. Eliezer Ydkowsky has written what is quite possibly the best work of fan fiction ever written. Well worth the read, and that's saying something because it will take you a few hours to get through it all. If you haven't read any of the original Harry Potter books (or seen the movies) do that first or it won't make a lot of sense.
I'm starting to think that Eliezer is actually as smart as he thinks he is. That would be really scary.