I love being outdoors and in nature. Luckily, I currently live next to a farm, so I can wander around outside at my leisure. Especially at night, because I can look up at the sky then. Camping, hiking and rock climbing are awesome, but I haven't gotten to do any of them in a long while. But I also love getting out and about in the city as well. I also took up mountain biking not too long ago as a way to get outdoors more and it is awesome.
Astronomy and history are two things I love to get nerdy about. I try to watch as much programming about the two subjects as I can and also read up on both subjects. Roman history is probably my favorite (tons of political intrigue and maneuvering).