Jeff Bridges’ character in “The Big Lebowski” has become a folk hero since the movie was released 20 years ago, partly because “The Dude’s” laid-back vibe fits so well with the man who plays him. In this week’s “Sunday Sitdown,” Willie Geist talks with the legendary actor about his childhood in a Hollywood family, his sixty-year, Oscar-winning career, and his personal “dude”-like zen.