In the conclusion of a two-part story, Sam (Ted Danson) refuses to admit that he's jealous when his brother Derek (George Ball) sweeps Diane (Shelley Long) off her feet. Sam even feigns indifference when Derek begs Diane to accompany him to Paris. The situation intensifies when Diane shows up at Sam's apartment -- hoping against hope that he'll try to talk her out of going with Derek. One of the best-remembered Cheers episodes, this one brought the series' first season to a rousing (or is it arousing?) close. ~ Hal Erickson, Rovi