By anti-social I don't necessarily mean that you don't like people, but rather that you often prefer to be alone or your geek hobbies are usually done solo. (Such as solo video games, reading, etc.)
Speaking for myself, I often prefer to be alone. I play mostly solo video games as my main geek outlet these days, and also enjoy watching movies by myself if I've never seen them before (though I enjoy sharing movies I've already seen with people who haven't seen them).
My one social geek hobby is probably board games. I have two gaming groups that meet once a month. One is just me and two guys my age, the other is me and some guys from our church college/20's group.
So how about the rest of you? Are you more of a social geek, or do you most often prefer solitude?