I always wondered, what do they do with the made up languages with subtitles? For instance, Daenerys speaking Dothraki, do they have the German voiceover actress speak her lines in Dothraki, or do they leave in her original voice?
I was under the impression writers actually wrote a Dothraki language specifically for the show (much like huge nerds speaking Klingon). Localizaiton actors probably say exactly what the original Daenerys says.