Legendary sitcom actress Lucille Ball hosts a one-hour retrospective looking back at the previous six seasons of the series. Part one includes Jack's arrival in the apartment and how the roommates have adapted to one another. Part two highlights John Ritter's physical comedy and how the show's comedy relies on the classic sitcom misunderstanding. Ritter also makes a brief appearance with Ball. This episode was presented in primetime as a one-hour special, but shown in two parts in syndication.