Though I read Hardy Boys books like they were going out of style, I missed The Hardy Boys/Nancy Drew Mysteries when it originally aired and was only peripherally aware of it. Not quite sure how that happened because that was a time in my life when I had time to read and watch TV. Luxury!
That being said, watching it now, I find that the retro cheese factor is impressive. Especially with the two-parter The Hardy Boys & Nancy Drew Meet Dracula. Not only do you have Bernie Taupin and Paul Williams appearing but the fact that Glen A. Larson brought you both this and Battlestar Galactica means that he can enlist the acting services of someone like guest-star Lorne Greene. Enjoy this trip (as in falling over) into yesteryear. Beware the hair, though.