Not to mention, (IMO) THE best sci-fi series...or ANY series, for that matter:
Babylon 5.
B5 was a great series...far from the best though.
Here’s my list:
Star Trek (TOS)
Deep Space Nine
Firefly
Stargate (SG1)
Battlestar Galatica (remake, original sucked)
Babylon 5
Star Trek (TNG)
Stargate (Atlantis)
Farscape
Enterprise (hey, some people did like it)
Space: Above and Beyond
Lexx (just kidding, I hated that show)
I just included the Space Opera shows, otherwise the X-Files and the like would be up there.
I loved Babylon 5 until the Vorgon solution. I sat there for 10 minutes with an empty feeling in my stomach. I could never sit through another episode. I spent years watching the series, getting pulled in deeper and deeper then....... I was so disappointed.
SG1
Farscape.
Star trek TOS.
In that order IMO. Firefly would be on that list if they had more episodes.
That's a good one...I bought the entire series on DVD.