Proxemics
The man in the orange sweater is Elaine's boyfriend and is known as the "close-talker." Elaine brings him over to the apartment to meet everybody. In a previous scene, Jerry warns his parents that this man talks extremely close to people. There was another clip that I was going to add, but it wouldn't let me embed it. In that clip, Aaron (AKA the "close-talker"), talked to Jerry's parents, Jerry and Elaine. Just by watching their reactions, one could tell they were not comfortable. He would get in their face and the people who he was talking to would either back up or give him a weird look. In this clip, Kramer is greeted by Aaron and feels extremely uncomfortable. In fact, he backs up so fast he falls over on the floor.