To this day, I don't think Star Trek: The Original Series and The Twilight Zone have been topped.
Excluding any of the Trek spin-offs, no love for Babylon 5
, Battlestar Galactica Farscape
, or The X-Files
Widening to comedies, I'd also point to Futurama
and Red Dwarf
, although the latter is a British series and out of bounds of the discussion here.
Oh absolutely (Though I've never had any great love for Red Dwarf, I must give it another try, as my SciFi cmedy taste has likely changed since I've tried it. I did really like what little I've seen of the Cat)
Having said all that, you've forgotten one of the parameters is "Before 1985"
One Day I hope to be the Man my Cat thinks I am
Where are we going? And why are we in this Handbasket?