I was frightened Benedict Cumberbatch says in a soft,thoughtful voice over lunch on a rainy afternoon in a NewYork City.He's not talking about the terrible act of voilence he survived o-n a trip to South Africa a few years ago.Nor the daunting proapect of playing some of the w-orld's most recognizable figures:Stephen Hawkin,in a 2004 BBC movie that served as one of his early breaks,or notorious WikiLeaker Julian Assange in Bill Condon's The Fifth Estate.