Besides the caving thing, like many of you I also enjoy being outdoors. I've never been a big fan or participant of team sports, although I do have a soft spot for dog mushing and may have watched a rugby game or two. I volunteer helping with the Iditarod dog sled race in Alaska each year, and I've been walking dogs for the SPCA (though not recently). I manage to talk myself into a variety of other volunteer cleanup, maintenance and education projects in the outdoors and caves.
I love backpacking, and I'm packing right now for another trip into Denali. This also gives me an excuse to accumulate even more gear and spend hours engrossed in topo maps. I'm a novice cross-country skier with a reasonable ability to stay upright on flat ground and groomed classic trails. I used to dabble in flat water kayaking and entry level mountain biking, but it's tough to travel the country with all that equipment so not any more.
I'm an avid outdoor (and cave) photographer. Mostly landscapes, wildlife, and aurora photography. Packing light is a nice idea, but my camera gear and lenses are not small. So I cut back on carrying extra clothing instead.
My gadget obsession also extends to amateur radio and tinkering with making and modifying geek toys, although I confess I'm not active with the ham radio thing much these days. Bright lights and things that make noise are fun to play with.
I enjoy recreational shooting (pistols and rifles), and while I support the idea of sustainable hunting I'm not personally a hunter. But I will try almost any dead animal at least once, even the exotic ones. I am not a vegetarian.
I accumulated a large quantity of military collectables over the years, both as a teenager and later while serving in the military. For practicality reasons I'm not really actively collecting these days, but I have been persuaded into doing a little Civil War reenacting and I'm also loosely connected with a WWII reenacting group. I enjoy military history, museums and research.
I also help moderate a couple of forums, because really I have no life.