Troy
This adaptation of Homer's great Trojan War epic is set in 1250 B.C. One scene depicts Orlando Bloom, playing the character of Paris, as he rides through the town on a chariot with a dainty pink parasol. Unfortunately, parasols were first invented 800 years after Troy took place.
Lord of the Rings: The Return of the King
Hobbits are supposed to be much shorter than elves. For the most part, this was consistent in the film adaptations of J.R.R. Tolkien's timeless classic. In this scene, it is apparent Merry and Pippin are the same height as Frodo and Sam, even after drinking ent-draught.