When Rhoda's apartment has a fire, she can't move back in for some time. So she moves in with Mary. Things don't go well. Their personalities are so different that it doesn't take long for them start to fall apart. There are two really funny scenes. The first is when Mary arrives late and Lou Grant has been on the elevator and has come up with a really great idea. Just as he's about to pitch it to the staff, there's a call for Mary from Rhoda. He does a slow burn as he tries to remember what he was going to tell them. The other is when Rhoda is trying to watch Mary's little TV under the covers and there is a W.C. Fields movie on. Also, the final thirty seconds are terrific.