I thought that the piece called "Falling" at the Axiom art exhibit was quite interesting. The idea was that when you put your face in the box, you feel as if you are falling. This is done through a set up of eccentric cams that are used to spin chains around, but they change speed and direction because of the shape of the cams. There are mirrors in the back of the box that you see you face in, but it is through these chains that are constantly moving. If you look at it for a minute, and focus, it creates a pretty cool illusion of falling.