Hm, I do about as much sports as I program... The rather marginal sport of ski-orienteering is my favorite. It is really concentration intensive, there is a high pace. I've been pic of the week on Norway's largest Orienteering news site: http://www.o-nett.com/tiki/tiki-browse_image.php?imageId=212
in reply to The sportiest activity that I do regularly is best categorized as...
So, I picked Snow/ice on the poll. But I do a lot of orienteering too. Have a look at http://www.learn-orienteering.org/. That'll become a wiki based on my AxKit::App::TABOO module some day... :-)
I've done some mountainbiking and triathlons too, as well as the occasional street-running relay.
I'm not so much of a rock climber, though I have done a couple of alpine climbs, I like it more on ice. I've done some glacier stuff. That's rather nice. And I've been to about 6050 meters in Peru. I think we were very close to 20000 feet, but I didn't think about it at that time... Story at http://www.ausangate.kjernsmo.net/.
Uh, that was enough ego-boosting for one morning... :-)