TV fans may already know Laura Benanti from roles on Go On, The Playboy Club, Law and Order:SVU, and many others. And of course theater lovers have long been fans of the Tony-winning Broadway performer. On Thursday night, the two worlds merged when Benanti stole the show as Elsa in NBC's ratings smash Sound of Music Live!, leading more than a few viewers to hope that Captain von Trapp might end up with her as opposed…
