The Mystery of the Yellow Line

I came across this video today, and I thought it was absolutely fascinating. So, while you're waiting patiently for me to post my predictions for the Big Game tomorrow, you can check this out. It explains the technology behind the yellow first down line on telecasts of football games. Even after this explanation, I found myself wanting more information, so I clicked here for some detail that I found to be really helpful. In the meantime, enjoy!