With a Harlem Shake began a new mass hysteria. Just a few weeks ago on YouTube appeared crazy spot called «Harlem Shake», which in a short time managed to collect more than four and a half million views.The real Harlem Shake is a dance from 1981, although it was also popular in rap videos in the early 2000s.After an amateur beginning, the Harlem Shake has now reached the highest levels of YouTube, with more contributions surely on their way.