All the President's Men (1976)

In the highly-anticipated adaptation of the Watergate affair, Robert Redford and Dustin Hoffman took on the roles of Washington Post reporters Woodward and Bernstein, who broke the scandal. In the spring of 1972, five men burglarized the Democratic National Headquarters at the Watergate Hotel. The revelation that they were funded by Nixon's re-election campaign ultimately led to Nixon's resignation and endless Deep Throat jokes, but that's another matter.