Interesting film, about Edward Murrow's fight against McCarthy. It comes across as pretty close to the facts, and includes real footage of McCarthy's hearings. A good piece of historical filmmaking there.
Of course, it's also a brutal indictment of the political atmosphere and media in the USA today. The message repeated all through this film is that the media have a responsibility to check political craziness, and that the idea that communists/terrorists are so evil that we should throw away civil liberties and common decency is just as crazy as it in fact is.
It's filmed (nicely) in black and white and Clooney's direction is very slick. One odd note is the music, which is presented as interludes in the film. It's good music, but a bit odd as a way to structure a film.
Good Night, and Good Luck (IMDB)
Good Night, and Good Luck (Amazon)