1. If you take a cat and shave off one side of his whiskers he'll walk like he's drunk.
2. If you then shave off both sets of his whiskers he'll stop and any doorway in the house and slowly poke his head through to make sure he can fit. It seems they use their whiskers as a measure to make sure their body can fit through things.
3. If you tie a string to his tail and on the other end of the string you put a small bolt or nut ... then you scotch tape all four of his feet and drop him on the floor hilarity ensues. First he'll try to kick the tape off .. then when he moves and the bolt or nut clatters behind him he'll take off .. with very little traction. Upon stopping .. the bolt or nut will rattle up under him and he'll go again. Word of caution ... you must catch him and remove these things are he'll run himself to death.