Most of these are just nit-picking, and being overly stubborn, but the only one That would actually bug me is number 39.
39. My favourite one was where Americans claimed their family were "Scotch-Irish". This of course it totally inaccurate, as even if it were possible, it would be "Scots" not "Scotch", which as I pointed out is a drink. James, Somerset
As someone who lives on the island of Ireland it is very annoying when Americans (It seems to be only Americans, I've never encountered anyone else from another country who claims to be Irish, or indeed a different nationality other than the one they are currently living in!) fail to distinguish between their ancestory and their nationality.
You are American. You live in America, are grounded in American culture, read the American papers, listen to the American news, are ruled by American laws, etc. etc. You may have Irish/Italian/Maori Tribesman/whatever ancestory, and that's fine, in fact it's pretty cool if your relatives used to live in Ireland, Obama's part Irish, who would have thought it? but as much as you want it to that does not make you Irish.
Just a pet peeve of mine, I know there are many people who don't really care, but when you've lived all your life in Scotland, are visiting America and are told by someone who has never left America, and knows nothing about life in Scotland other than what pop-culture and Braveheart have told them about it that they are more Scottish than you because their Granmother emigrated from Scotland. (This actually happened to a friend of mine.) Then it gets a bit ridiculous.
Oh, and "could care less" No, that just doesn't make sense America. Argh!