The year before, the Rhoda show had spun off from the MTM Show, and the famous episode where Rhoda gets married was the #1 sitcom episode for the entire decade, and Phyllis had been the star of that episode. (The premise was that Rhoda FINALLY got married, to Joe Girard, and invited all her Minneapolis friends to Manhattan for the wedding, and Phyllis was supposed to pick her up and bring her to the wedding in her parents' apartment, but forgot--so the episode kept switching back and forth from Rhoda frantically racing through Manhattan in her bridal gown to get to the wedding, and Phyllis trying desperately to apologize to the wedding guests who were all disgusted with her). It was such a huge ratings success that it decided the CBS executives to spin off Phyllis to her own sitcom.
It was widely publicized before the first episode that it would involve Phyllis, after the death of her notoriously weird but never-seen husband Lars, trying to make it on her own her daughter Bess in San Francisco, and the premiere was the #1 show in the country that week because everyone wanted to see what had happened to Lars and how the incompetent Phyllis could make it on her own. The first several episodes following were also ratings gold: the show had a wonderful cast, including not only the very funny Cloris Leachman but the intensely likeable Lisa Gerritsen as her daughter Bess; Valerie Harper's funny and handsome real-life husband at the time Richard Schaal as Phyllis's idiotic co-worker Leo; Barbara Colby, who had been one of the best guest stars on The MTM Show, as Phyllis's boss at the photography studio; Jane Rose (who could be quite funny) as Lars's mother, Audrey; veteran character actor Henry Jones as Audrey's new husband, Judge Jonathan Dexter; and, in a real casting coup, the hilarious Judith Lowry as Jonathan's ancient mother, Mother Dexter.
But the show was cursed by insanely bad luck. Barbara Colby was randomly shot on the streets of Los Angeles after the third episode had been shot (they never caught the killers--they think it was just a completely random gang shooting). They recast her part quickly, but they couldn't really get a rhythm going for the work scenes without Colby (who had genuine comic talents), so they scrapped the work scenario and fired Dick Schaal, and made Phyllis work instead for the city of San Francisco. That didn't work very well either. The scenes with Phyllis at home with Judith Lowry were hilarious, and Jane Rose had a marvelous sense of comic timing, but both women were very old, and Lowry died at the end of the second season at age 86. Soon after Rose was diagnosed with terminal cancer, so they decided to pack the show in.
It was an odd show, given that whereas on most sitcoms of the time (like The MTM Show) the central character was sane and surrounded by crazy people, Phyllis always had to be the craziest person on her own show: the character had been written as too neurotic, brittle, and narcissistic to ever change believably. But the first few episodes are wonderful, and as good as almost anything The MTM Show ever did. And the character of Phyllis is pretty unforgettable.