Is it just me or did DS9 have the best continuity of any of the Star Trek series? I'm in the middle of the 3rd season on DVD and I'm also catching bits and pieces of later episodes on YouTube. I saw it when it first was on TV and I got a couple of seasons from the library before. There's just so many recurring characters. Kai Winn and Gul Dukat were recurring "villains" from the first show to the last. I mean, in Next Gen, you might hear Riker talk about his father once or twice or you get a Klingon storyline once a season. On DS9, the build up to the Dominion War is almost from the first season. The Borg didn't even get that kind of continuity. TOS, TNG, VOY, and ENT had some nice main character background episodes, but it was few and far between. You also don't seem to get to know the background characters on the other shows very well, probably because they're at a different planet every week and DS9 stays in one place. TNG had Q, but still he might have been on one show per season. Gul Dukat is on like every 4th or 5th episode of DS9. It's just such a completely different feel than the other Trek series.