I've caved, and am now watching Season 5 of Lost online.

[conuly]

And not two minutes into the first ep (discounting the previouslies), do you know what I hear? "If that would have happened...."

This really merits a poll of some sort, but I have no idea what I'd say in it.

Edit: Oh, come on! There are PLENTY of reasons they could speak Latin! For example, they could simply be well-educated. It's not some obscure language.