Ron Howard talks with Kim Masters about his two new films and how he handles big changes in the movie business. Howard shows himself to be a case study in adaptability; he's made a documentary for the first time in his career (Made in America will air on Showtime October 11); his new feature film, Rush, was rejected by the studios so he made it independently -- making it his first film financed outside the studio world in 36 years. He's become an avid Twitterer, regularly tweeting out photos to his 700,000+ followers. And while he admits that some of the changes in the business worry him -- after all Universal pulled the plug on his adaptation of Stephen King's The Dark Tower series -- he essentially reflects that changes is inevitable and cyclical.