[Simon Alexander]

Originally Posted by Ultima

Because Americans are silly? ^^;;

[...]

But anyways, ... I do think it has something to do with Americans not being able to understand other accents as well, and as soon as we hear an English accent, we go "Ooh! An accent! We're in another land!" I have noticed a few movies where I think "But doesn't this take place in _______? Why do they have American/English accents?" But it usually doesn't bother me much. I think casting has a lot to do with it too.

While many American movie makers do do this, they aren't the only ones. Many European films do it, too. As I said, I take it as the characters are speaking their common language (say, French) but we're hearing it in our common language (like English). Depending on where the film was made and what actors are in it, we may hear their accents come through.

This doesn't explain why Leonidas spoke with a Scotts accent in 300, but.