Few directors are quite as divisive – he gets five-star reviews and one-star reviews right across the board, and seems to possess a certain self-awareness about this, in that his films appear to be deliberately terrible in places, as if to pointedly contrast with the moments of genius. What same director could so unashamedly pluck the heartstrings with something as devastating as Dancer in the Dark, only to follow it up with the coldly analytical, but brilliant arthouse experiment that is Dogville?