Jonathan Lamberton, New York City Mayor Bill de Blasio's sign language interpreter, is getting a blizzard of attention for his highly animated ways that were on full display during recent weather briefings. Standing a short distance away as de Blasio delivered serious warnings about impending snow, Lamberton, a certified deaf interpreter, was a whirlwind of movement — big gestures, incorporating his whole body, along with a variety of facial movements. [...] when he signs, it's with the full range of expressiveness deaf people use with each other, he said Wednesday in an online chat with The Associated Press.