Diamond spoke of a new series they were about to preview, about elderly women living in a Miami home, entitled "Miami Nice". Roberts corrected Diamond, stating that they were about to take a sneak peek at "Miami Vice". "The Golden Girls", which centered on four older women rooming together and enjoying their golden years, went on to become, arguably, the biggest success for Witt/Thomas/Harris, garnering several Emmy nominations (and wins for each of the show's four principal stars) and strong ratings. The series produced an equally successful spin-off in 1988, "Empty Nest", which starred Richard Mulligan as eligible older bachelor Dr. Harry Weston, who lived and held medical practice in the same neighborhood as "The Golden Girls". In 1987, Witt/Thomas/Harris had the new sitcom project "Mama's Boy" in development for NBC. It served as a starring vehicle for Bruce Weitz and Nancy Walker, in which the former played a successful journalist whose loving mother (Walker) moves into his New York apartment and interrupts his bachelor lifestyle. Susan Blakely and Dan Hedaya also starred. "Mama's Boy" was picked up by the network, but only retained the status of being a "special" throughout the 1987–88 season, due to its irregular scheduling. After a preview broadcast on September 19, 1987, it only aired five more times, over several months, between October 31 of that year and August 6, 1988. The seventh episode was never aired. In the 1990s, Harris created four more series for the company, beginning with the "Empty Nest" spin-off "Nurses", which aired alongside its parent series and "The Golden Girls" on NBC's Saturday night lineup. With all three of the latter series taking place in the same section of Miami (with "Nurses" focusing on the nurses' station and upper levels of the same hospital that employed Dr. Harry Weston), Witt/Thomas/Harris was thus able to create the rarity of a single, unified storyline carrying through all three programs in the same night. This practice continued between "Empty Nest" and "Nurses" alone after "The Golden Girls" ended its run in 1992. When it was announced that "The Golden Girls" would conclude in its seventh season, in the wake of star Bea Arthur's decision to leave, Harris immediately transported the remaining three "girls" (Betty White, Rue McClanahan, Estelle Getty) into the sequel series "The Golden Palace". NBC originally committed to airing the sequel, but CBS offered Witt, Thomas and Harris a better deal (24 episodes, versus NBC's agreement to 13).