I'm an INTP if you are partial to the Myers-Briggs thing.
I've noticed what people study in school tends to bleed over into our perception of reality. To quote my friend, "Everything in life, really, is about Welsh Literature." She was a Welsh Literature major. Go figure. I studied Economics and Computer Science at school so I tend to view the world through the lens of game theory or microeconomics. In that spirit, I really liked Nudge and Freakonomics. I love how people learn and adapt.
On the topic of hobbies, I spent most of my time in college singing. I am a tenor but I'm not fat enough to be very good. I ran cross country in high school and I still like to run/hike trails when I have the time. Besides these two activities, I do a bunch of things more casually. Odds are, if you are interested in something that doesn't involve heights, I've tried it before. If you are curious, ask me.