Depending on who you ask, MGMT is either the new messiah of pop music or a couple of extraordinarily handsome charlatans who have managed to dupe the entire listening world into loving them. The duo has been described at different turns as Nu Rave, psychedelic dance music for hippies, hallucinatory puwang rock, and a tired throwback to New York City's hipster-electroclash years-all of which might be a little bit true. But there's no denying one thing: Brooklyn-based Ben Goldwasser and Andrew Vanwyngarden, who are both 25, have an uncanny knack for producing pop music that sounds as if it were...