
How about Rod Serling and the Twilight Zone? Some of those shows are windows into 1960's America... fear of machines making people obsolete, fear of nuclear war, racism, etc.
Ed Sullivan had EVERYONE on his show... remember Elvis from the waist up? How about the immortal "Ladies and gentlemen... THE BEATLES!!"
Ozzie & Harriet had been on radio before TV, as was Dragnet, You Bet Your Life, Burns & Allen, and I think both westerns. Dinah Shore was on radio a lot as well. We all know Hitchcock and his films...