I'm pretty easygoing, but I tend to get caught up in whatever my latest passion is. Currently, that would be karate and working out at the gym.
I tend to joke a lot and be pretty silly, but I know when to be serious and how to listen; most people consider me to be very logical. I love deep, involved conversations, even if they're about random hypothetical things. I love a girl who can appreciate my sense of humor :).
That last part is probably a necessity to tolerate my company, since I can be eccentric at times XD. I can rein myself in when I need to, but life would be too boring if it were normal all the time.