 Famously demanding, with an attention to detail that sometimes drove costars and directors mad, Dunaway believed she was often mistaken for being as cold and calculating as some of the women she portrayed.Her clashes with Roman Polanski on the set of "Chinatown" earned her a reputation for being difficult to work with.Upon the release of the film, Polanski told a reporter for "Rolling Stone" that he considered Dunaway "a gigantic pain in the ass", but added that he had "never known an actress to take work as seriously as she does.