Skiing. Totally. When I learned I was about 12 (4 years ago) and I happened to be put in a class with a bunch of adults. So we went to the most distinctly un-steep hill there, and my instructor told us to back and forth across it, like you do. I got the hang of it right away, but I can't say the same for the other idiots I was forced to be with. They were always stopping, and I had to wait up for them all the time. When we finally got to a steeper hill, I expected more of the same. The moment I got off the lift, my ski caught on someone else's. I tripped and slid on my face down the first section of hill, taking two idiots with me on my way down.
Outside the physical, I also like making websites. Sometimes I just get bored and make a quick one. Now if only I could make something really revolutionary...