What's interesting about Blakes 7 is the way it is kind of dark mirror to Star Trek TOS. In Blakes 7, for example, there is also a Federation of planets, but it is kind of a police state, not benevolent. Instead of all working together, the crew of the original, shiny ship distrust each other and connive all the time behind each others backs. And then other stuff happens! Yes, lots of it "dark and depressing" but watching it for the contrasting sensibilities between that American optimism about the future that Roddenberry had, and the far more European, "we've had wars on our soil and you can't fool us" sensibility of B7, is just riveting, in my opinion. Plus, leather costumes. With studs. Lots of studs. Pretty. *cough* I found a similar contrast between American horror such as Stephen King's, where at often least someone comes out okay at the end, and the works of Clive Barker, in which everything just goes from bad to worse, the end. Which sounds, I know, BAD and all, but there is, oddly, something gleefully satisfying about it, like, "ha ha, no bullshit here, baby! Suck it up!" Or something.