Psy, the South Korean rapper whose song "Gangnam Style" stormed the charts and exploded onto YouTube like few others before it, rewarded fans with a free concert in Seoul that streamed live over Ustream. The show culminated with the 34-year-old singer making good on a promise to dance “half naked” in honor of his improbable climb up the charts.
Despite only being on YouTube for a few months, "Gangnam Style" has racked up nearly 360 million views. It's currently No. 2 on the U.S. Billboard Hot 100 and No. 1 in the U.K.
The video has been parodied all over YouTube, and the singer has made several TV appearances including the MTV Video Music Awards, Saturday Night Live, and Ellen, where he taught the talk show host and guest Britney Spears his signature moves.