Not including cartoons and sticking only stuff that aired in the US, I'd say that
Twilight Zone would probabl be considered the best of all time.
Star Trek (the original) would also have to get a nod even though I prefer
DS9. And
B5 comes very, very close, but the 1st and last seasons were so weak, I can't quite bring myself to say it was the best.
I know that some people will bring up the argument that for every "social commentary" episode of Trek, there was a "Space Hippy" one that people conveniently forget and the B5 is better. Truthfully, I'd rather watch B5, but Trek really was ahead of its time.
Another of the "greatest ever" would have to be
Kolchak, The Night Stalker. I don't know if this is really the first real, non-anthology, horror tv series, but it certainly is the most influencial.
But, when all is said and done, my favorite would have to be
The Adventures Of Brisco County, Jr. (with Kolchak coming in a very close 2nd). I'm not arguing that it's the best of all time, just the best to me.
