Orius' Sci-Fi/fantasy review:
Best
Star Trek: I think that says it all.
Star Trek DS9: The best of the modern Treks. Great writing and characters, pays approprite homage to the original where the others tend to ignore it.
Babylon 5: Started out with a slow first season, but by the end of the first season, the plot hooks start to really pull you in.
Stargate SG1: I've never taken the whole "aliens built the pyramids" idea seriously at all, but Stargate managed to take that premise and build a pretty good franchise with it. A well written show that can go from serious to funny, and which has successfully managed to cover the same sort of ground as Star Trek.
The Twilight Zone (original): It's simply a classic thought-provoking show.
Earth 2: This show had a lot of potential, but network meddling ultimately killed it. The fact that the storyline got more complex and tangled as the series went on didn't help.
The Adventures of Brisco County Jr.: Completely totally silly and over the top, but it was still a hell of a fun show to watch. It's a shame this show didn't survive yet X-Files did.
Quantum Leap: One of the few Sci-Fi shows to survive on a network. Not really much else to say on this besides the fact I liked it.
Hercules: The Legendary Journeys: Yeah, I know a lot of people hate Sorbo. But this is a fun, campy show with silly rubber and CGI monsters that knew better than to take itself too seriously. It suffered from some anachronisms true, but the fact that it could pull of some seriously episodes as well as the camp makes it a great and entertaining show.
Worst:
Star Trek: Voyager: I think that says it all.
X-Files: I hate conspiracy theories.
Battlestar Galactica (original): Pretty much a lame ass cheesy space opera that made little sense. However the updated version from what little I've seen of it shows some promise.
SeaQuest DSV: A classic example of a network ruining a show. The first season had some promise, but that was squandered in the second season's attepmt to get younger viewers interested. The third season was a decent attempt at saving the show, but it was too little too late. This show endured a painfully long death.
Andromeda: A classic example of why actors should stay actors and not become producers. A shame too, because this show started off strong.
Space: Above and Beyond: Let's have Earth fight a long and depressing war with an inexorable enemy that's ultimately unbeatable. No thanks.
Lost in Space: Danger! Danger! This is really bad TV.
Sinbad: An attempt to cash in on Hercules' success, Sinbad suffered from bad writing and acting.
Conan: A show with even worse acting and writing than Sinbad.