Himmler and Smith in “Unfinished Business”

[takes a drink] When a man gets to be my age, he needs a son. I thought of you as that son, John. I saw myself in you. If anyone had hurt you, shot you, as those assassins did me, I would have hunted them down and strangled them with my bare hands. But you did nothing to avenge me. Where's the tribute to the man who gave you everything? When did you even visit me when I was sick? Nothing. [Smith is blank] Say something, Smith. If not for yourself, then for your family. Say something in your defense!!

Smith

What can I say, mein Fuhrer? You're... You're right. I never loved you. I never saw you as a, a father. I saw you as a, a petty little tyrant. You're a mediocre man. [sees Himmler coughing at the words and retreats to his oxygen tank] A failed chicken farmer. The very thought that you see yourself in me, it sickens me. [Himmler inhales from the tank, but upon noticing something different, Smith makes him breathe the gas in until he dies. Smith turns off the oxygen tank, which is actually a tank of Zyklon B.]