This is crazy. Henri Rochatin, aged 65, has been performing stunts since the age of 5. In this clip, he balances on a chair on two glasses which are on top of another chair, which is balanced on four glasses, over the edge of a precipice 12,486 feet high in the French Alps:
[youtube=http://www.youtube.com/watch?v=mbTYtJxHJwM]