I can probably beat you at ping-pong
For most of my life I have specifically set myself apart from the mainstream, looking for unusual things and non-obvious choices. I never listened to top-40 music, I never played or watched any organized sport except soccer (when it was still a relative oddity), I was never interested in popular culture.
In the case of sports specifically, I abhor baseball and golf especially for their glacial pace and relative lack of excitement. I remain convinced that most of the time baseball fans cheer just because something--anything at all, doesn't matter what--happened. The pitcher spit? YAY! The coach scratched himself? WOO!
So in college, I did two main sporting activities: frisbee and ping-pong. It happens that my college, Carleton College in Minnesota, is a veritable mecca of frisbee activity; hardly an hour goes by without a game going on somewhere. And after I graduated, I eventually joined a summer frisbee league. Ping-pong took me longer to get back into after college, since it requires more than just a $10 disc and some open space, but eventually I discovered the local ping-pong clubs and became a decent tournament-level player. (Currently I have about an 1850 rating, which on a scale of 1 to 3000 (approximately, with 3000 being the best) means I can beat about 3/5 of other tournament players.) I travel to ping-pong tournaments all over the country, usually about 3 or 4 major tournaments a year.
If you love football, golf, basketball, or baseball, I don't want to hear it. What UNUSUAL sports do you like, or better yet, play? (And feel free to mention things that I as an American would consider unusual even though, for example, half or more of Great Britain loves cricket.)