The Lion King (1994)

Deliberate "mistake": At the elephant graveyard, little Simba claws Shenzi in the face. When Mufasa saves Simba from the hyenas, the cuts are gone, a few seconds later. [This was done intentionally, I'm sure, for two reasons. The first being, Disney doesn't let fresh scars linger on the screen too long. Secondly, during that same scene when Mufasa rescues Simba & Nala, he claws Banzai in the rear. To stress the point later in the movie, that severe scar is shown too, but only briefly, it too disappears because of reason 1. Still a "mistake", but there's why.]

Factual error: When Mufasa is showing Simba the kingdom from Pride Rock they are facing the sun, yet Pride Rock's shadow is visible below them. Also in the same position, you see that they have shadows behind them. Then a few seconds later when Simba sees the shadow area the shadows are in front of them while you can see part of the sun to their left side. They would be facing south when the sun is east. How are their shadows in front of them?

Continuity: During the stampede in the gorge, when Simba jumps up on the dead branch, he leaves very distinct claw scratches. Then in the following scenes they're gone, although other marks and details on the branch remain.

In Swahili, 'Simba' means lion, 'Rafiki' means friend, and 'Shenzi' means uncivilized. There are many Swahili references throughout the film, and we can assume it takes place in Tanzania or Kenya, since Mt. Kilimanjaro is shown in several scenes.

Disney wanted people to despise Scar, the film's villain, so, during Scar's big song 'Be prepared', they made references to Adolph Hitler. When Scar's army begins to march, they are goosestepping like Nazi soldiers and have their snouts raised like a Nazi salute (their snouts appear longer here than in any other part of the movie, and pointed to their right). Scar is on a large ledge, which resembles a balcony, much like that used by Hitler - on the side, the rock has a pattern resembling a giant Swastika. And finally, on the ground where the army marches, lines appear. These lines were on the streets of Germany, where the Nazis paraded.

The plot of the film is loosely based on Shakespeare's Hamlet. I know this sounds stupid... but king dies. His son discovers it was murder - the killer is the victim's brother, who is now in control. The son leaves the kingdom, only to return to challenge his uncle. Of course, Hamlet doesn't have quite such a happy ending, or as many songs.