* GeniusBonus: The signs in the Jewish Quarter are written in Esperanto. In ''Literature/MeinKampf'', Hitler wrote that he thought it was created as a tool to unify the Jewish diaspora.
* HarsherInHindsight: Chaplin only had a faint picture of the atrocities occurring in Nazi Germany when the film was being produced, based on what refugees from Europe had told him. Back in 1940, the worst things have not started yet anyway. He would later state that had he known the full extent of the Nazis' crimes, he would never have made the film.
** [[DoesThisRemindYouOfAnything "We've just discovered the most wonderful, the most marvellous poison gas. It will kill everybody!"]]
** The concentration camp scenes in particular make for quite awkward viewing. Perhaps the most In Your Face example of this trope is when the Jewish Barber first arrives at the camp. Whereas all the prisoners walk in one direction, he walks toward another. When one of the guards asks him where he's going, he cheerfully answers: "The Smoking Room," before being pushed the other way. In Auschwitz, prisoners were pointed to walk in one direction or another, and people waved in the wrong direction got sent to gas chambers.
** Hynkel makes a stirring speech about Tomania's expansion, including France, Finland and Russia. France had already been invaded by Nazi Germany, Russia would be in the next year, and Finland would remain Germany's co-belligerent during the latter.
* SugarWiki/HeReallyCanAct: Anybody who thought that Chaplin was only capable of sight gags and slapstick corrected themselves after watching this movie. Then again, it wasn't acting so much as [[AuthorTract Charles Chaplin speaking his mind]].
* HeartwarmingInHindsight: With the allegations of UsefulNotes/NaziGermany's influence on Hollywood during its [[UsefulNotes/GoldenAgeOfHollywood golden age]] coming to light, Chaplin's determination to produce an anti-Nazi satire feature film in defiance of it comes off as downright heroic.
* MemeticMutation: For some reason the RousingSpeech has been seeing some spread, in the form of clips like [[http://www.youtube.com/watch?v=V7HtO57f1Es this one.]] Such clips are rather frequently posted under the title "The Greatest Speech Ever Made", or some variant of it.
* MisaimedFandom: UsefulNotes/AdolfHitler watched the film at least twice. It is believed he enjoyed it.
** Chaplin says he would've given anything to know what Hitler thought.
* SignatureScene: Hynkel dancing with the globe balloon.
* SomeAnvilsNeedToBeDropped: The anti-nazi message isn't exactly subtle but this was the US of 1940 and a large minority in the US had some sympathy for or were impressed by the nazi regime. Effective, easy-to-understand and revealing satire of nazism and fascism was badly needed.
* StockPhrase: "Schtonk!" alone stands for the whole film (up to the point that the German film parody of the fake Hitler diary affair is called this way).
* ValuesDissonance: Chaplin's speech really doesn't fit with a modern understanding of fascism. He describes the Nazis as "machine me with machine minds" who "think too much and feel too little." It's now widely accepted that fascism is a highly emotional and irrational movement, generally brought about by paranoia and xenophobia.
** Or it can be [[ValuesResonance just as easily interpreted]] as talking about "machines" behind dictatorship in general: war and propaganda, as they turn humans into nothing more than nameless cogs.