Did you see his Harry Potter fan fiction? http://www.fanfiction.net/s/5782108/1/Harry_Potter_and_the_Methods_of_Rationality
Incidentally, a fine way to deal with fiction deprivation is to go forth and write some of your own. It's fun, and most people who try it report that it's hugely rewarding. (Either that or they don't say anything at all. I have failed to prove my thesis! But it's worth trying anyway.)
Some research says that lurkers make up over 90% of online groups. I suspect that Less Wrong has an even higher percentage of lurkers than other online communities.
Please post a comment in this thread saying "Hi." You can say more if you want, but just posting "Hi" is good for a guaranteed free point of karma.
Also see the introduction thread.