"Gangnam Style"
is a hit single produced by PSY to help in the eventual demise of the earth.

As far as YouTube goes, "Gangnam Style" is like the sun and all other popular videos are planets. It is possible that the popularity was accidentally caused by spam, but the world may never know (Very akin to how many licks it takes to get to the center of a Tootsie Pop.) what cause the rapid launch in views. Even your dad will enjoy it!