欧美综艺 美国达人 第四季 的评分为5.0分，共有80人参与。　　The fourth season of America's Got Talent, an American television reality show talent competition, premiered on the NBC network on June 23, 2009. Country singer Kevin Skinner was named the winner on September 16, 2009. This season is the first season to be broadcast in high definition.欧美综艺 美国达人 第四季 豆瓣评分（8.0）