Beyonce had girls (and guys) across the globe chanting, "To the left, to the left" when she released "Irreplaceable." In the song, the diva lets her beau know that he should never think he's indispensable and demands that he pack his stuff and … well … place it "to the left." Simple enough, but Beyonce's "pack your shit and go" opus became an anthem. "Nobody expected it to be the phenomenon it was, it surprised everyone," said Tor Hermansen, one-half of production duo Stargate. "For one, it crosses every boundary; it went from the mix show on Hot 97 in New York to country stations …it's a song people from all walks of life can enjoy."