SDB has led me to my new favorite linguistics blog: Amaravati: Abode of Amritas. I love linguistics, and have done quite a bit of study into languages (and language processing) over the course of my AI education, but I'm really just an amature enthusiast. For an interesting post, check out Amritas' explanation of why he thinks nouns and verbs are the only two universal lexical categories.
As SDB points out, computer-recognizable languages are far more primitive than human language. I don't think it's merely a matter of scale, either; I think human language is a powerful indication against the existence of strong AI.