Great Dictator, The - Musical Chairs
In the scene where Chaplin helps the enemy soldier into the plane, watch carefully. In the beginning of this scene we see him get into the plane on the left side. In the next scene where they are following, he will switch places with the soldier at one point. After the plane turns over, and we are looking at them as if they were right-side-up, they switch places again.
the movie, eyes