Gangnam Style (2012)
One of the most memorable fads of 2012 was “Gangnam Style,” an irresistible tune by South Korean rapper PSY that became a global viral hit, surpassing Justin Bieber to become the most-watched video on YouTube. The accompanying dance moves (a sort of horsey clop thing) were equally popular, with everybody from Britney Spears to NASA busting a move. But for British man Eamonn Kilbride, it was the last dance he would ever do. At his company holiday party in 2012, the 46-year-old father of three busted out the dance and instantly collapsed from a fatal heart attack.