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: The Adventures of Superman
Alternative Character Interpretation: In one episode a gangster and his moll discover that Clark Kent is Superman. Superman's solution? He leaves them stranded on a snowy mountain until he can figure out what to do with them... and then they fall to their deaths while arguing. Did Superman do that on purpose, hoping they would kill each other while fighting, thus preserving his secret?
Enforced Method Acting: In "Night of Terror", the actor playing the thug who knocks out Lois accidentally hit Phyllis Coates hard enough to render her unconscious.
"Funny Aneurysm" Moment: Superman actor George Reeves died less then two months after the series' last episode aired. At the time, almost all his career options involved playing Superman, a role he had come to tire of (he reportedly never liked the job to begin with, seeing as it was the 1950s and neither TV nor comic book superheroes were seen as the potential money makers and career franchise builders they are now). Thus, the exchange between Jimmy and Superman in the show was chillingly prophetic:
Jimmy: Golly, Mr. Kent, you'll never know what it's like to be like Superman.
Superman: No, Jimmy, I guess I never will.
Crowning Moment Of Awesome: In the above mentioned episode about the gangster and his moll, Clark Kent, not Superman, is shown using his super powers in his civilian guise - breaking down doors, roughing up bad guys, and grinning as bullets bounce off him as Clark.
Crowning Moment of Heartwarming : "Around The World With Superman" - Superman uses his powers to give a little girl back everything she has lost. He has moments that are more super, but rarely one in which he is more of a hero.
There's also the Season 1 episode, "The Birthday Letter", where Superman gives a little girl stricken with polio a flight around Metropolis. The people's reactions and the girl giving Supes a kiss on the cheek solidified this already heartwarming moment.
The Other Darrin: Noel Neill replaced Phyllis Coates as Lois Lane in the second season. In an interesting twist, Noel Neill was also the first actress to play Lois Lane on live action film, having first played the intrepid reporter on the 1940's Superman serials (episodic shorts that used to be played in movie theaters before the main feature).
Never Live It Down: Reeves was trying desperately to avoid this trope, but sadly even his death cemented it.
Nightmare Fuel: The cackling, wheelchair-bound woman from "The Evil Three" unnerved several people when the episode first aired.
Two villains get caught by Superman. One tries to shoot him, to no effect. Superman demands to know, "What have you done with Jim Olsen?" You'd Expect: The two cooperate, hoping that this scary invulnerable guy recommends this as grounds for leniency during sentencing. Instead: One tells the other to "give [Jim] the current".
Two crooks who have captured Perry and Lois (and who have previously said that they are going to kill all four members of the Planet staff) ask Perry how he'd describe the route if he were telling Jimmy how to get to that house. You'd Expect: Perry realizes that the only reason they'd ask this is to record his voice for a trick phone call to Jimmy. Instead: He describes the route. Jimmy is almost killed when his acid-eaten brakes give out.