Kes and I just saw this. Thanks for the recommendation! Now we must get Teenybuffalo to see it...

I don't know what the non-English language is.

IMDB's trivia page claims "mostly Enochian". Seemes appropriate to me; I've been annotating Alan Moore's Voice of the Fire, which sort-of links Enochian and witchcraft in a few different ways.

I made Kes laugh out loud by reading her selections from this article about the goat.