The science museum in London has a really beautiful stainless-steel model of a combination lock similar to his wooden one. The first time I played with it and saw the bar fall into the slots was one of those wonderful "holy cow!" moments when something you always thought of as deep magic is revealed as having a simple principle behind it.
Wow, I just did that right 10/left 10 trick on my Master lock here, and it opened right up! That's messed up.
Being somewhat security conscious, whenever I lock it (at the gym), I always set the dial to zero so that I'm not giving out the 3rd number of the combination to any passer-by. This also thwarts the right10/left10 attack, which is nice. Cool video!
It's nice to see how other professions besides computer programming have masterful hackers.
The most intriguing video was this: http://www.youtube.com/watch?v=dTGO_NR6YiA where showed his computerized saw that he had built himself.