I really enjoyed the first three seasons of this show during its original run (the last to seasons are just... ok). If you're familiar with this series, you'll recall the story arcs kept getting aborted with the root cause being megalomaniacal producers alienating the cast and crew. It was originally going to be about the Taelons looking to Earthlings to join them in evolving together and William Boone as an ambassador and advocate of sorts, as they had ruined their reproductive capability, but once they alienating Kilner and Howard, then Chevolleau and Parker you can see the disinterest on part of the cast and writers from mid-season-3 onward. If you're a Roddenbury fan you'll enjoy the first three seasons... but by the fourth season most characters have been killed off or "reassigned" and the fifth season is pretty much all new faces with little tie to the original plot lines laid out by Roddenbury. If you're a Majel Barrett-Roddenberry fan, she was in the first couple of seasons but she too ended up alienated by the producers.
The sets are interesting, if plasticky-looking, but the CGI was very good for the time. You'll notice elements in this series which everyone else copied (especially Minority Report with the holographic screens and gestures)... and the "Global" handheld communicators/scanners/etc. roll-up screen you'll recognize as upcoming smartphone technology. Up through season 3 is enjoyable to watch (although Kilner's absence is felt), and sci fi addicts will want to watch season 4 and 5 just to see how it ends.