[ARIES666]

Key word here is "best"! There have been so many tacky, cheaply produced, corny Sci-Fi television shows that just do not stand up to the "test of time". I am going to go with "best" as opposed to "favorite" shows. Shows like Lost in Space, Voyage To the Bottom of The Sea, Knight Rider (original), Six-Million Dollar Man, etc, etc have a certain nostalagic charm about them, but quality TV...I think not!

That said, this list is purely subjective in nature, since it is my opinions. There will be shows missing from this list that I am sure are quality shows, but if I have not seen them, then I cannot pick them!

Twilight Zone (1959-1964)
Outer Limits (1963-1965)
Star Trek (1966-1969)
The Prisoner (1968)
Lexx (1997-2002)
Firefly (2002)
Battlestar Galactica (2003-2009)
Fringe (2008-????)

I would like to put "Wild, Wild West" (1965-1969) on the list, but it has been so long since I have seen it. It was a very imaginative
"western/action/comedy" series. Set in the old west, but the agents (Robert Conrad and Ross Martin) had very advanced weapons and gadgets. I think it classifies as "sci-fi", but others may disagree.