Sony Pictures emerged as the biggest winner of Oscar nominations this year, reaping 18, the most it has scored in many years, if not ever.Sony's nods include District 9 and An Education for best picture.News Corp.'s 20th Century Fox was close behind with 14, including nine for Avatar and three for Crazy Heart, while The Weinstein Co. collected 13 for movies such as Inglourious Basterds" a