Which 1976 film starring Robert Redford and Dustin Hoffman is about the Watergate investigation?

The 1976 film starring Robert Redford and Dustin Hoffman about the Watergate investigation is All the President's Men.

Directed by Alan J. Pakula, the film dramatizes Washington Post reporters Bob Woodward and Carl Bernstein as they investigate the 1972 break-in at the Democratic National Committee headquarters and the political cover-up that followed. Redford played Woodward and Hoffman played Bernstein.

The screenplay by William Goldman was based on the reporters' 1974 nonfiction book, All the President's Men. The movie focuses on reporting, source protection, editorial skepticism, and the difficult process of confirming information before publication. It covers only the early portion of the scandal rather than every event that eventually led to President Richard Nixon's resignation.

A frequent confusion is treating the film as a general biography of Nixon. Nixon barely appears directly; the story is primarily about journalism and the investigation conducted by the Post. Jason Robards won the Academy Award for Best Supporting Actor for playing executive editor Ben Bradlee. In 2010, the film entered the National Film Registry for its cultural, historical, and aesthetic significance.