#2 Gangnam Style
Korean rapper PSY's "Gangnam Style" music video trotted into second spot, a testament to his self-deprecating giddy-up dance move. The video is fast approaching a billion views on YouTube. "Gangnam Style" refers to the pretensions of the wealthy citizens from Gangnam district.
Image: Psy performing "Gangnam Style" live on NBC's Today show in New York.