Seinfeld: The Chicken Roaster

Jerry and Kramer switch apartments when Kramer can't sleep due to a neon sign promoting Kenny Rogers Roaster beaming into his bedroom. George is convinced that leaving a personal effect behind at a woman's apartment is the best way to ensure a second date but this gets Elaine into trouble when George leaves behind her fur hat that she had charged to her expense account. Once Kramer and Jerry have switched apartments, they seem to switch personalities as well.