gbeer's, even.

And, to add additional information, basically what happens is that you create a key where all of the points are drilled to their lowest settings, while leaving the humps between them. Push the key in until it's one before the last position. (You know how when you put a key in a lock, it has a few disinct places where it's wants to rest? The last one of those before it's fully inserted.) Then bump the key fully in while turning the key. It seems from some of the clips that you can bump it in the right direction so that the bump itself turns the key.

What happens is that the humps between the key's positions push the pins up very quickly, and that causes the driver pins to fly up away from the key pins. This creates a large gap between them, which means that there is a significant period of time in which the cylinder can be turned. The diagrams on the Wikipedia entry for pin tumbler locks should help illustrate what I just said.