Sorry for the thread resurrection, but I've been re-listening to my back archive of DIF episodes, and got to this one.
And I was shocked to realize when it was brought up what was comparable to Star Trek, and all of you seemed to fixate on Firefly, granted an excellent show that I do really enjoy, while completely missing the opportunity to mention Babylon 5, as something that had arguably quite a few ties thematically & setting wise, as well as airing concurrent to DS9.
Granted not everyone is a fan, or familiar with, all shows, but with the cross section of folks, I'm just amazed it didn't get the mention.