I think the best hobbies for hackers are the ones that will force you to go out . Walking, sports, astronomy, going to the beach, and so forth. We already use too many hours to stay at home hacking so it is better to counterbalance in some other way in the free time.
Totally agree. After a major coding session earlier today, I spent a couple of very enjoyable hours gardening. The complete contrast really works for me. Although I do sometimes listen to a tech podcast at the same time :-)
Which podcast? TWiT? I haven't found a more entertaining (and somewhat educational) podcast than that, including other non-tech-related ones. I'm probably very uninformed, though, so I'd like to hear which others might be worthwhile.