If you're a Superman fan and have a chance to check this series out, I highly recommend doing so. Collyer is excellent in the lead role and has a fine supporting cast. Some of the storylines are fantastic, especially the Atom Man episodes, plus there's the seven-episode arc which introduces kryptonite and another which directly attacks the KKK (which led to threats of bodily harm against the show's producer). If you're interested in learning more, there's an in-depth book on both the radio series and the first television series by Michael J. Hayde called Flights of Fantasy.
Up, up and away! *swoosh*