Harry Dresden
Adamantium Member
I'm sure to forget some shows here.
Firefly
Farscape
X-Files (I'll list Fringe here as well, since it's sometimes like a remake of X-Files lol)
Highlander (if you want to call it sci-fi)
Misfits (again, not sure if it really fits in the sci-fi genre)
Space Above and Beyond
Defying Gravity
Torchwood (I've only seen the US version, but I enjoyed it)
Terminator: TSCC
For animations, I loved Robotech when I was young.
Too many good sci-fi shows get cancelled early, it seems. I suppose it's just not a genre that enough people want to watch (or at least not enough Neilsen people).
the Highlander is Sci-fi.....dont forget according to the movie these guys were aliens exiled here and the last one standing would have the option to go back.....of course the TV show kinda deviated from that premise somewhat......
i was disappointed with the Starz version of Torchwood.....in the original BBC one they dealt with Alien encounters.....which was the reason back in the 1800's that Queen Elizabeth started it.....after her encounter with the Doctor....