My vote goes to Science Fiction Theatre with it's host Truman Bradly. It goes back a few years before The Twilight Zone which was also excellent. I got hooked on Sci-Fi in the 4th grade and still enjoy all the classics from the 40-50's. I wish I had a dollar for every Ace double novel I read in back then
Some of my favorite authors are A.E. Van Vogt, Issac Asimov, Robert Heinlein, Andre Norton, Fredric Brown, Pohl Anderson, Fredrick Pohl & his wife C. M. Kornbluth, Robert Sheckley, Alfred Bester and many more that CRS wont let me recall