Every TV lover of a certain age remembers the hysterical ending of “Newhart” in 1990, when Bob wakes up in bed next to his “Bob Newhart Show” wife Suzanne Pleshette, not his “Newhart” wife Mary Frann, to discover the series was all a dream. A year later, he pulled a similar stunt at the end of “The Bob Newhart Show: The 19th Anniversary Special,” which honored the original series by reuniting the living cast. As he signed off, this little elevator skit revealed Larry, Darryl and his other brothe