Some of the sillier humour in other scenes, left over from Chaplin’s silent film days, detracts from the rest, but not enough to ruin it. All the Germanish gibberish spouted by Adenoid Hynkel is hilarious, largely because of Chaplin’s excellent performance aping Hitler. Beyond the dictator himself, there’s plenty of delicious irony and satire elsewhere in the film, such as the scene in which a Tomainian storm trooper protects a group of Jews from being attacked by a mob of his fellow storm troopers, not because he wants to, but because he’s ‘just following orders’.
It really is quite remarkable that this was made when it was, with filming commencing a week after Germany invaded Poland and the film being released before the US had joined the war. Chaplin apparently later said that he wouldn’t have made the film had he known the extent of the Holocaust (which was really only just getting started at that point), but I think the timing actually gives it greater power. It’s by far the best of the two Charlie Chaplin films I’ve seen.