"Showdown" is the two-part first-season finale of the American television sitcom Cheers, written by Glen and Les Charles and directed by James Burrows. It originally aired on NBC (as separate Parts One and Two, respectively) on March 24 and 31, 1983. In the Cheers pilot, college-educated Diane Chambers was neglected by her previous lover and then hired as a waitress by bartender Sam Malone. Since then, they flirted and resisted each other throughout the season. In this two-part episode Sam's more-successful brother Derek becomes Diane's love interest, leaving Diane torn between Derek and Sam. In the end, Sam and Diane passionately embrace in the office.