It's always a hoot to see big budget, and sometimes blockbuster, movies miss some goofy mistake in a shot or scene, be it technical bloopers, or historical ones, or in one case, a newspaper headline misspelling ("Heist" in "The Dark Knight") ...check out the chariot scenes in "Gladiator," and you may be able to catch the gas canister on the back of one of the chariots...and Russell Crowe's character is called "the Spaniard," a reference made popular in France in the 1,300's, even though the movie is set in the year180 A.D....there's a scene in the original "Harry Potter" at the Hogwarts school where a cameraman is clearly in the shot...Mel Gibson wears a kilt in "Braveheart," even though kilts weren't worn in Scotland until 300 years later....someone yells "call 911" in the movie "Malcolm X" even though it hadn't been invented yet....more on these, and a bunch more, here.