I just turned on the TV and W. (which I reviewed when it was released in 2008, "Two Movies About Jerks. In Chief.") The scene was one where Bush and his cabinet are discussing entering into war with Iraq, the infamous "pre-emptive strike" and even more infamous "Axis of Evil" speech.
I was struck myself by how great the casting is in this movie. Looking around the room, the nuanced expressions of everyone in the room (including Don "Rummy" Rumsfeld, who says he doesn't "do" nuance) immediately evoke the political history and leaning of these now nearly-mythical figures. In retrospect, I think the movie is worth watching for just this scene.