These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: Captain Scarlet
Crowning Moment of Funny - Captain Scarlet screaming "GOODNIGHT ORSON!" into an electronic bug, deafening the poor mook listening in on them.
How about the artwork in the end credits? Seeing the hero about to be crushed by closing spiked walls, tied up and sinking while sharks close in for the kill...
Nightmare Fuel - It's surprising that the kids of the 60's who watched this weren't scarred for life at the death toll. At least 6 people die per episode — people EXPLODE, fall out of airplanes, fall off dams, get crushed by car lifts, get run over, get shot in the FACE, and turn into living bombs.
Captain Black is Nightmare Fuel incarnate.
The opening credits put the camera in the viewpoint of someone sneaking down a dark alley who is suddenly caught by searchlights, unloads an entire clip into his attacker and is shot dead. By the Hero, who doesn't even flinch as he does so.
Uncanny Valley - The characters in the CGI remake fall into this sometimes.
They also occasionally did as well in the original.