I'm beginning to doubt if there is a flaw with my disc. The opening credits have some VERY grainy shots but the text of the credits looks pristine on top of it - so it looks like there is nothing wrong with the mastering. For example, freeze frame the shot at 05:11 when the names "with Mary McCann and John Speredakos" appears onscreen. The titles look fine but the grain on the main image is immense. Do you see, what I consider, to be a 'snow' type effect to the grain - looking like it's covered in a layer of tiny white particles?
I can live with it if I know it's intentional. But I'm going insane wondering if I have a dodgy copy - ignorance is NOT bliss in this case !!