I've been writing fanfic on and off for, oh, must be 10 years now. When I started, I didn't even know that there was a word for it and that other people did it too... Only four of my stories are online though, because the rest are just atrociously bad and I'm incredibly embarrassed by most of them (mostly because the older ones all include an original character that is a cleverer, prettier, cooler and more popular version of my teenage self). So far, I've only written one BtVS story (for the IWRY ficathon 2010), the others are for House and Titanic (I know, I was young. But funnily enough, that story has the most reviews and traffic of all my fics on ff.net, so I don't see why I should take it down if people still like it).
Has anyone ever attempted a real person fic? I have to say that (now) I'm kinda opposed to the idea in general, but I read two really good ones when I first hit the world of internet fandom and *coughs* attempted one myself (let's not go there), and that's what brought me to writing really.