As a "southerner" who has spent the majority of his life in Scotland I will admit to cringing when I encounter the complaints about not understanding what the Scots say because they "can't speak properly". It is a different country so it shouldn't be a surprise that there may be strong accents, though I recall from my "education" up to the time I moved up here I had been led to think Scotland was pretty much a county in the north of England - very far from the truth.
What you hear on this DVD is pretty much how people in the West of Scotland speak - it caused a few raised eyebrows up here that one of the major roles was given to Emma Thompson who then had to use a fake Scottish accent, rather than use a Scottish actress.
I am disappointed that the social disparity and economic conditions that have meant healthier lifestyles are achievable in the south has resulted in the comment of "Lighten up, guys". It's not just Scotland that has this problem - in England, Blackpool, Manchester, Liverpool, Salford, and Blackburn are among blackspot locations that appear in bottom ten lists for male and female life expectancy either at birth or from the age of 65.