I'm relatively sure it's only been distributed internationally with subtitles, though I could be mistaken. I haven't seen a dubbed version, at least.
@Caress: I generally am too angry during his movies to laugh. Through the irony of Capitalism: A Love Story did get a few chuckles; to think that Michael Moore, a man with a net worth of $50 million, made a movie that criticized capitalism... Oh Michael. xD