The Fog of War: Eleven Lessons from the Life of Robert S. McNamara
I had been meaning to watch this for a while, but I finally got round to watching it today.
It's a fascinating documentary detailing the actions of Robert McNamara during his time as the Secretary of Defense for John F. Kennedy, and then Lyndon Johnson. It contains a lot of archive footage, but the main draw is the responses and explanations put forward by McNamara, who at the age of 85 is still bright, alert and sharp as a knife.
He looks back on his actions, and evaluates them with the benefit of hindsight. He also has some pertinent 'lessons' that should be noted by the current US administration.
Anyway, it's a great documentary. If you're interested in politics, the mechanizations of the military, and current affairs you'll find it really interesting.
Also, it comes highly rated on imdb.