12 angry men

http://www.youtube.com/watch?v=W8trhBy2DLE

In this clip of the movie 12 angry men, the men are arguing over whether or not the boy killed his father or not. At his point in time there is only one of the 12 men who actually believes that the boy is innocent. After corralling about why the man thinks the boy is innocent, one man stands up asks the question about the knife. The knife that was used to stab the father. One of the other men starts to tell all the facts that had been brought up in court about the knife. About how the boy claimed to go the movies during the time when his father was killed. And how the bought a unique knife in a shop during that time. The people want you to believe that the boy is innocent are saying that there is only one knife like that in the world. But the one man disproves that theory by bringing a knife that was exactly like the knife that was found in the chest of the dead father.
The argument that is being made is that of logos. Logically there are some gaps in the prosecutions theory. There is a reason to doubt that the boy killed his father. The man that is trying to prove the boys innocence in the jury then pokes big gaps in the whole argument one at a time, and s.lowly is starting to turn everyone else on his side. He does this very cleverly and tastefully and brilliantly.