We're all a little weird, and I'm not any different in that case. I tend to lean towards the tech side of things in terms of interests, along with those nerdy things like going to anime conventions, or driving out to spend a day having a blast at a Ren Faire. Give me an excuse to get into costume and I'm all for it!
I won't say that I'm always a happy guy. I'm human, I have moods, and get grumpy, but I try to keep that to a minimum. And I can be shy in person, tend to be kinda quiet until I get comfortable with people.