If you want to see something creepy, do a google search for US Patent No. 3216423. I just happened to arbitrarily come across this when I was doing patent research for work. I had to immediately come on here and post this. I'm not sure if I'm allowed to post a direct link, but here it is:
http://www.google.com/patents?id=qtFaAAAAEBAJ&pg=PA1&source....