INTRODUCTIONWhen "The Mary Tyler Moore Show" ended in1977 after episode 168, there weren't floods oftears on the set because most cast memberslooked forward to new jobs in new shows. Valerie Harperhad her own series, "Rhoda," Ted Knight was going to playin a new CBS sitcom, and Ed Asner was launching a sixty-minute series based on his Lou Grant character. Betty Whitehad a new show lined up, with Georgia Engel in second bill-ing. Mary herself was branching out into movies and otherTV work. Gavin MacLeod, the show's lovable but melan-choly newswriter, Murray, had several reasonable offers,but had no show of his own lined up yet. Gavin's personal life was also in constant flux. He andhis second wife, Patti, were moving again--this time tothe eighteenth floor of a luxury condominium complex onOcean Avenue in Santa Monica. They had moved seventimes in the years they had been together. "If we're not inescrow, we're not content," Gavin joked to his friends.Sometimes, however, he wondered if they'd ever be con-tent