Don't think ive ever seen mention of this video here yet, cool little documentary with good picture and whatnot. The rider in part two literally riding-on until he falls over is some more interesting footage ive seen, I can't imagine you'd see that kinda stubbornness in a racer today, although maybe thats due more to all the crazy health monitoring and all the stuff that sucks a lot of the life out of racing today.
http://www.youtube.com/watch?v=A3EHJjHP6yc part 1
http://www.youtube.com/watch?v=4B6ZycaBelU part 2