Polanski was probably too prepared to film Shakespeare's "Macbeth" in 1971. His wife, Sharon Tate, had recently been murdered by the Manson family. I hear that some critics have used this incident to explain why Polanski shows Macbeth kill Duncan onscreen (Shakespeare's script keeps this offstage). The performances are impeccable, and of course the English language doesn't get any more beautiful than this. Polanski added a few dark touches to the ending, making "Macbeth" as despairing as "Chinatown." Check out "Scotland, PA" for an amusing, but still brutal, reimagining of this story.