As there seems to be a couple of you who haven't seen it, I'll add my recommendation to In Bruges. Some bias here - the writer/director is an Irish playwright, and two of the stars are Irish - but I like it a lot.
Of course, if it's not to your taste, you may find it crass, racist or any of half a dozen other unpleasant things. Them's the breaks with comedies - YMMV.