This thread reminds me of our ride leader on Sundays. I've nicknamed him "The Machine". Not the pentium whatever type of machine (cause those break down if you look at them too hard) but more of a locomotive, or energizer bunny time machine.
He's older than the rest of us in the group and an awesome person to draft behind on flats (cause he prefers to pull and he has cruise control riding) but hills are not his forte. And yet every week he's there, every time he has at least 5000 ft of climbing planned. This week he wants to do 8000 ft over 50 miles and all of us hearing it are in pain just at the thought of it.
Anyway I'm sure there are a ton of better, stronger faster riders than us out there but when I think of people who defy what they are supposed to be doing, "The Machine" is the man.