You can’t blame me for wondering why, earlier this same year, CBS didn’t note the 50th anniversary of another of its very memorable and entertaining variety series: The Smothers Brothers Comedy Hour. But Tom and Dick Smothers quickly courted controversy, while Carol Burnett and company pointedly avoided it. Both approaches led to moments of comic brilliance – but where the Smothers Brothers were fired after three seasons, The Carol Burnett Show thrived for a dozen years. A lot of that, as you’ll see in this retrospective, is due to the talent and taste of the host herself, and the brilliance of repertory member Harvey Korman, and the costumes by Bob Mackie, and, in the later years, the riotous contributions, many of them ad-libbed, by Tim Conway.