A couple of interesting Ed Sullivan items from Wikipedia, and which will explain my Ritz Brothers joke for those not in the know.
"Moe Howard of the Three Stooges recalled in 1975 that Sullivan had a memory problem of sorts: "Ed was a very nice man, but for a showman, quite forgetful. On our first appearance, he introduced us as the Three Ritz Brothers. He got out of it by adding, "who look more like the Three Stooges to me."[19] Diana Ross later recalled Sullivan's forgetfulness during the many occasions The Supremes performed on his show. In a 1995 appearance on The Late Show with David Letterman (which is filmed in Ed Sullivan Theater), Ross stated, "he could never remember our names. He called us 'the girls'." "
"In a 1990 press conference Paul McCartney recalled meeting Sullivan again in the early 1970s but Sullivan apparently had no idea who McCartney was. McCartney tried to remind Sullivan that he was one of The Beatles but Sullivan obviously could not remember and, nodding and smiling, simply shook McCartney's hand and left."