PSY and his crew really know how to make music videos that go viral. Shortly after his breakout hit Gangnam Style hit 2 billion views on YouTube, PSY releases his latest video for his track Hangover, featuring Snoop Dogg. Say what you will about PSY, but the man can make some ridiculously fun, acid induced videos to watch. The Hangover song will stick with you for weeks to come, much like the rest of his tracks.