* AlternateCharacterInterpretation: One of the earliest examples of the "assertive" Clark Kent that became the mainstream interpretation in Post-Crisis stories.
** Some of the cartoons showcase Superman's timing in stopping whatever threat is in play as oddly lax, usually waiting until either Lois gets involved or until Clark is directly effected. Case in point, the titular villains in "The Bulleteers" manage to destroy Police Headquarters and demolish the City Power Plant, causing a citywide blackout, before Clark ever gets involved. This can be a little jarring for people who see Superman as a proactive force for good.
* SugarWiki/AwesomeArt: The background settings and objects, especially during the Fleischer era, are so realistic and well-drawn that you'd expect this to be something from Creator/{{Disney}}, but bear in mind this is from the same people that brought us the ''WesternAnimation/{{Popeye}}'' and ''WesternAnimation/BettyBoop'' cartoons.
* BrokenBase: There is division over the Famous Studios cartoons of the series. While some find them to be just as visually impressive as the Fleischer-directed shorts, others disliked the relative cheapness of the cartoons and forced science fiction undertones within the plots. The addition of more [[UnfortunateImplications stereotypical villains]], particularly Japanse and German spies ([[UsefulNotes/WorldWarTwo for obvious reasons]]), doesn't help matters.
* CounterpartComparison: While none of Superman's usual RoguesGallery shows up in any of the shorts, the Mad Scientist from the first episode greatly resembles the original Ultra Humanite only with no paralysis. Likewise, the scientist in "The Magnetic Telescope" bears more than a passing resemblance to ComicBook/LexLuthor, though looks more like Doctor Sivana. Also, while visually different, the villain of "The Mechanical Monsters" operates a lot like the Toyman.
* EarWorm: Superman's theme song/{{leitmotif}}, especially if you try to sing Superman's name along to it.
* FairForItsDay: "The Electric Earthquake" has a Native American villain who is a [[AffablyEvil well spoken]] WellIntentionedExtremist MadScientist type who dressed in either a contemporary urban suit and tie or in laboratory gear, with only somewhat longer hair to mark his ethnic identity. For a 1940s American cartoon, that is a remarkably sophisticated subversion of a common racial stereotype of the time.
** Sadly, not so in "Jungle Drums" or "Japoteurs" where the villains get some fairly harsh stereotyping.
* SugarWiki/HeartwarmingMoments: The final short ends with Superman flying past the American flag and giving a salute.
* MemeticMutation: The opening narration, especially "Faster than a speeding bullet", and also "Up in the sky! It's a bird! It's a plane!" The fact that the cartoons were repeated all over the world as pre-film features for years after they were first made ensured that they became catchphrases for multiple generations.
* NightmareFuel: One of the end sequences at the very end of one of the Direct to VHS tapes for this series starts playing "The Merry Go Round Broke Down", and halfway through, [[ScareChord a loud "DING!" sound is heard]] and the tape [[NothingIsScarier immediately cuts to black]].
** In "The Underground World" Lois and the resident scientist are captured by BirdPeople and brought to their throne room/altar. They see a near perfect golden replica of the scientist's father who went missing in the caves where bird people live years ago. Then they get tied to a stone, the floor under them splits open revealing a pool of boiling gold liquid and they realize [[TakenForGranite it's not a replica...]]
* OlderThanTheyThink: DC once stated in print that the earliest occurrence of the classic "Phone Booth Costume Change" happened in 1948. In the comics, perhaps -- but the Fleishers were there first by seven years in "The Mechanical Monsters" (1941).
** Superman fights a dinosaurian PrehistoricMonster that is bigger than most buildings and smashes everything in its path. Essentially, this episode is Superman vs Franchise/{{Godzilla}}, only 12 years before Godzilla was first created!
** "Terror on the Midway" features Superman doing battle with a KillerGorilla called Gigantic seventeen years before the debut of Titano.
* OnlyTheCreatorDoesItRight: The quality declined after Famous Studios took over production of the series.
* ValuesDissonance: A surprising lack of this for a WW2-era propaganda cartoon, the native american villain from ''Electric Earthquake'' is even played without stereotype, but the African tribe from ''Jungle Drums''... has about the level of racial stereotype you can imagine from this kind of media. As does'' Japoteurs'', which features some outright racist, stereotypical Japanese villains.
* SugarWiki/VisualEffectsOfAwesome: The rotoscoping looks amazing, and the animation still holds up well to this day. The special effects work is also particularly notable, such as the battle and subsequent meltdown of the giant laser cannon from "The Mad Scientist".
* TheyWastedAPerfectlyGoodCharacter: Or rather, DC has wasted a perfectly good character. [[AttackOfThe50FootWhatever The Arctic Giant]] can never be called a {{Notzilla}}, because it ''predates'' {{Franchise/Godzilla}}. As such, Superman can fight this potentially recurring giant dinosaur time and again, without fear of being sued by Toho, because it ''circumvents'' dreaded Internal Copyright Laws. Yet... it hasn't reappeared since its debut in the 40s.
* WhatDoYouMeanItsForKids: "Jungle Drums," which is loaded with NightmareFuel, introducing images such as barbaric natives attempting to burn Lois alive. (Amusingly, this cartoon made its way onto a "Parent Approved" home video VHS tape of Public Domain cartoons.) The poisoned needle and giant Egyptian tomb guardians in "The Mummy Strikes" are also unpleasant bedtime contemplation for nervous children.