Fluent in 6 months. The guy is dreaming. Oh, and yes I speak Chinese, and basically learned to by myself living in Taiwan. After all these years and existing in a totally Chinese world with nobody to speak English to, I am not fluent. I bet my Chinese is better than his.
I quite agree with you, Zippo, that he is delusional about how quickly you can learn a language. What I like about his talk is his advice about how you can help yourself learn faster; most of his points sync up nicely with TCI philosophy.
Liu Xun (刘迅) is the Chinese identity of Paul Faust, who fancies himself a pretty dang good teacher of language.