Of all of tonight’s TV events, this is the one I’m anticipating most eagerly. Last night, ABC presented a two-hour special on the Watergate scandal, and it was very clearly structured, and at times unexpectedly emotional. Tonight, MSNBC covers similar ground, but through a particularly fascinating prism: the movie made, starring Robert Redford and Dustin Hoffman, who played Washington Post reporters Bob Woodward and Carl Bernstein in All the President’s Men. “Arguably the best movie on reporting made,” Hoffman says of the film, and he’s right.