Fair for Its Day: While the depiction of minorities is hardly perfect, Native Americans are treated with far more respect than usual works of the time period allowed for, and Asian characters were generally treated as respectable, law-abiding citizens... when Yellow Peril wasn't in play.
The Scrappy: Finding a modern listener who enjoys Poco is difficult. A squeaky-voiced character who always speaks in rhyme and claims that speaking normally causes him pain, there are several points where he can't tell the heroes important things because he can't think of rhymes. Couple this with his naivete and you've got quite an irritating mix.
YMMV for the television show:
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?
Complete Monster: Lou Cranek, from season 1's "The Mind Machine", is a major crime boss being investigated by a Senate subcommittee for his illegal activities. Cranek kidnaps a scientist named Edward Stanton and steals a device Stanton invented that would use hypnosis to help mental patients. Cranek, who wants Stanton to use the machine as a Mind-Control Device, forces Stanton by knife point to force his former accountant to change his testimony in front of the committee. The accountant then goes insane, hijacks a bus with school children on it and nearly drives it over a cliff. Superman saves the children, but the accountant dies, the machine having destroyed his mind. Cranek uses the machine to silence and kill 2 other witnesses. When confronted with these deaths by Stanton, Cranek states he does not care and will use the machine himself when Stanton refuses to. Cranek plans to kill Stanton after he no longer needs him and plans to use the machine to silence the final witness against him, Lois Lane.
"Funny Aneurysm" Moment: Superman actor George Reeves died less than 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.
Plot Hole: In the first/pilot episode, the rocket carrying the infant Kal-El explodes and burns after the Kents get him out. While the rocket seems to indicate he is from another world, there is no way and certainly no leftover tech to confirm this, let alone the name of the planet the baby came from. This Superman may never have heard his parents' names, or his own birth name, yet somehow, later on, he seems to know at least about Krypton.
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.