Of what's already mentioned, I like "Twilight Zone", "X Files", "Twin Peaks", "One Step Beyond" and "The Munsters".
I liked the original "Outer Limits" series. Comedy wise, "Bewitched" was always a top favorite along with "The Addams Family".
Does "Xena: Warrior Princess" count in these categories? How about "Lost In Space", "Land of the Giants", "Time Tunnel", "The Invaders", "Sliders" "Dark Skies" and "Roswell"- or too sci/fi to fit in?
I loved "Beauty and the Beast" and still watch eps I taped back then. I wasn't fond of the 3rd season after Linda Hamilton left, so I don't often re-watch the show after season two.