"Macarena," by Los Del Rio. Released in 1993, "Macarena" was the second longest running #1 song in America, and the best selling debut single of all time. That's right - of all time. Weddings, bar mitzvahs, lame frat parties - you could not attend a gatheing of more than four people in the 1990s without idiots rushing to the dance floor to do the little weird hand clapping duck walk dance that went along with the song. The memories are searing.