Here's hoping PSY isn't just a one-hit wonder outside of Korea. He was big before Gangnam Style hit there but now he's everywhere! You just have to see the video to get why there's so much buzz about him and this song. It's definitely the Summer Jam of 2012 (Take that Carly Rae.)
Also good to know: the song refers to a wealthy neighborhood of Seoul and quietly mocks it's %1 residents.