I mainly only read Tokio Hotel fanfiction, but sometimes I'll read AFI fanfiction, too.
Yes I love reading fanfiction. If I don't like how a certain tv show is going, I'll read the fan fiction of it. Mainly I read Gossip Girl & One Tree Hill because they are my favorite shows. I haven't actually read anything on bands or movies but now that I think of it, I might as well. It interests me to see how people can come up with these twists and turns.
Yes, I use to read Buffy the Vampire Slayer Fanfiction all the time, good stuff!