My current favorite fandoms are Criminal Minds and Star Trek: 2009.
I've read some How to train your dragon, thanks to one of my favorite authors writing in that fandom! It also caused me to watch the movies!
Criminal Minds: Reid and Hotch
Star Trek: Jim and Spock
Unless a story looks really, really interesting, and the author seems to have a good tendency towards finishing stories - I've taken to waiting until stories are complete before reading them.