In the "Aloof" movement of "The Rich Man's Frug," two of the male principal dancers walk down the stairs to light a woman's cigarette, while the others dance behind them. The background choreography in this shot leads directly to the triangle formation of the next shot, and the two men are now in the middle of the group, although there was no time for them to reach that position.
At around 36:45, during the "Fickle Finger of Fate" scene, with Shirley MacLaine's back to the camera, the shadow of the boom mic is visible in the upper right portion of the scene.