For those of us weaned on Doctor Who, shows like Blake's 7 are instantly appealing. But for today's audiences, try this trick:
Listen closely to the dialogue and notice how the acting--unlike the SFX--is quite good. Then imagine that George Lucas, Jerry Bruckheimer and any actor you admire collaborated on a faithful remake, line for line, with top-level effects. Can you see it? (May require more than one viewing.)
Good. Prior to Battlestar Galactica on TV and Star Wars on the big screen, this is about all we had in terms of production values. (We were lucky if the boom mics were not showing at the top of the screen.) We had to make do with fascinating story ideas and characters we could inhabit each week. If the monsters were made of rubber, the spaceships made of cardboard, well, we lived with it.
Note to Spielberg, Bruckheimer, Lucas, et al: Keep the script stet and consider giving these back to the world.