I was forbidden several years ago by a politically correct editor to write that the Irish have the gift of gab. That was an unpermissible ethnic generalization, and probably racist, either by inclusion or exclusion, I forget which. I am reminded of that prohibition every time I review a new movie from Ireland, because so many of these movies are fueled with the music of speech, with the verbal poetry of a nation that until very recent times amused itself primarily by talking, singing and reciting to one another. (Now that television has taken over, I expect them to gradually subside like the rest of us into distracted mutterings the length of commercials.) Paddy Breathnach s I Went Down is a crime movie in which the dialogue is a great deal more important than anything else. It takes the form of a road movie and the materials of gangster movies (do real gangsters learn how to act by watching movies?), but what happens is beside the point. It s what they say while it s happening t