One of those 60s things. Hippies, weary of the druggage, or weary of gurus, gave Christianity a try, mainly of the charismatic variety; they found "new" ways to express their faith, though often these new things were as old as the Gospels. There were Jesus communes, Jesus rock (fallout: mainstream things like Jesus Christ Superstar and Godspell), new churches. Your local staid baby boomer xians may have once been among these long-hairs. Ask them what went wrong.