Sapphire and Steel (1979-82)
Dirs. Shaun O'Riordan (Assignments 1, 3, 5) / David Foster (Assignments 2, 4, 6)
34 episodes, approx 25 minutes each.
"All irregularities will be handled by the forces controlling each dimension. Transuranic heavy elements may not be used where there is life. Medium atomic weights are available: Gold, Lead, Copper, Jet, Diamond, Radium, Sapphire, Silver and Steel. Sapphire and Steel have been assigned."
I saw
Sapphire and Steel first when I was a kid. I don't remember what age exactly, but it blew my young mind. I saw some of it again in my twenties. It blew my mind once more. You can guess where this is going... yup, and again in my thirties: mind blown.
In all that time I've not encountered anything else quite like it, so in my experience it's unique. It's so unique that I could easily skip the introduction (and indeed the middle section) and go direct to the recommendation, but I won't. Instead, I'll try to give an overview of just what the hell it's all about.