A business owner noticed that in the alley behind his building, people had started to use a hidden corner as a public bathroom. He installed a shower-cam to teach the bathroom bandits a lesson, and ended up with one of the best videos of all time.
I think it was 2pac who said, "Revenge is the sweetest joy next to gettin' cupcakes". (close enough) That's what makes the video below so great. We get to watch a man exact his revenge on a cold blooded criminal from the warmth of our own computer monitor. The video is long but worth it, check it out below.