Fifty years ago today CBS introduced a new TV series that sharply divided American cultural opinion. Critics and intellectuals hated it, and it became for them a symbol of how far television had fallen since the so-called “golden age” of live, New York-based programs in the early days of the medium. Most everybody else felt differently, however. The show became an instant hit of mammoth proportions. It spent its first two seasons at the very top of the Nielsen ratings. At its peak, it was being watched by 60 million viewers per week. As late as 1982, eleven years after...