Summary: There is no particular story to it, being a recap of what really happened. Famous actors act like it's an interview about the interview, talking about the past recalling what has happened before and after the very, very famous 1977 interviews of Richard Nixon by british tv host David Frost. The rest is history, and the interviews are available for free on youtube.
Pros: Sam Rockwell, the acting is absolutely fantastic and there is some serious attention to the details, from costumes to haircuts to the voice acting by Langella, to resemble Nixon's babbling deep voice. There is also Hall's serious eye-candy, so it's by far a great view from the start to the end. Surprising addition to the team is the presence of Michael Sheen, who for me will forever be Lucien from Underworld (which isn't exactly a compliment), yet holds his ground with the difficult character and a great british accent.
Cons: Richard Nixon looks nothing like Nixon, I understand the choice of actor because of the quality of Langella's acting, but while Frost is VERY similar to the original, it takes a lot of imagination to remember that Langella's supposed to be nixon.
Sheen's character furthermore is dislikable from the very beginning, as he -but maybe that's the director's choice- seems to be on edge/uncomfortable the entire time throughout the movie.
Kevin Bacon still is absolutely terrible at what he does and seems completely overrated as his character is pointless from minute 0 to the very end, two hours later.
Overall a great movie to watch, but not a party choice. Must Watch. Alone.