I never did any traveling as a child. I feel like I'm making up for lost time - so now I plan an international trip each year. I've always gone alone, it forces you to really interact with the locals. Some destinations have included: Seoul, Shanghai, Bangkok, Machu Picchu, Buenos Aires, Rio de Janeiro, Reykjavik, London, and Tokyo.
But I'm usually not on vacation. Fortunately SF has so much to offer. I often ride my bike across town to Golden Gate Park, just to go swing dancing. I take long meandering walks just to get a donut, or a burrito.
Much of my free time is spent playing games. I'm a dungeon master (not the sex kind) and a euro-game enthusiast. I play DOTA but I'm awful. I enjoy learning a new board game purely by playing (having absolutely zero knowledge of the rules).
Math and programming.
Making people laugh.
Movies: Fargo, most Monty Python
Music: Classical, classic rock
Food: nearly everything