When done correctly, a video can go viral just for following a now dead trend. Take the South Korean pop sensation Gangnam Style by PSY for example. 

For a few weeks, the song dominated the Internet and pop culture, but it quickly over saturated the market until viewers were completely sick of the catchy tune and ridiculous music video. 

Now, Jean-Luc Nguyen is bringing the song back to life by hashelping 160 kids from the Cambodian slum of Phnom Penh parody the music video like everyone else in the world already has. 

Yes, it has been done before, but the kids do such a good job, especially for their dire circumstances, that they are now receiving the recognition they deserve.