Sorry to reboot this thread, but I watched episode 4 and 5 of the original (1981) series last night...
Episode 4 alone IMHO contained far more interest, depth and insight than the entire 3hrs of the recent remake. After watching it, I couldn't believe it was only 27 minutes long TBH due to how much content was in there. The pace seemed to not rush in the slightest, giving time where necessary to people/events. Most notibly people actually talk a lot to each other about things, giving insight into themselves and events surrounding them (this seemed lacking in the modern version). No massive explosions, huge battles or gun fights were required to keep it interesting and intriguing. It's feet were kept firmly on the ground, giving a more solid/realistic feel.
Even my partner, who was watching at times as she came in/out of the room, commented on how much went on in such a short space of time, and how much deeper and more interesting it seemed than the recent remake.
Also interesting how of that 27 minutes, Torrence - appearing for the first time - was given about one minute of screen time... He appears again in the final episode for about just 5 minutes, and that's it...
Episode 5, again seems to offer so much in its 27 minute running time, with Bill and Coker spending much of the episode togethor. And here again, insightful conversation (not action or explosions) gives depth to the characters, triffids and apocalypse.
I hadn't watched these old episodes for years, but I see my recollection of them was fair - Yes, the acting is a little wooden in places, and the effects not maybe upto modern day standards*, but as a piece of drama - which at the end of the day is what it's trying to be - it's outstanding!
* - I find the triffids in the original series far more imposing and believable than the modern CGI counterparts we saw. They are better explained in the original, are simpler (less mobile, less moving parts, less ninjary) and therefore more believable. Even little bits of attention to detail as explained and shown, that the triffids find cities like deserts, as they don't like concrete etc... Where as in the modern adaptation, short of seeing them driving golf karts, they seemed to be as mobile as they like (even climbing trees).