Posh American accents
Seems to me the American wife of the Earl of Grantham, Cora Levinson, in Downton Abbey has one of those posh "Seven Sisters" accents. She's played by an English actress, so it might have been a bit of a challenge for her to adopt the right American edge without going overboard. It's actually very subtle, and it took me a while to realize that she was supposed to be an American. Her mother, Marge Levinson, however, played by Shirly MacClaine, has a broad New York style accent that is hard to miss. Not to mention the garish makeup and costuming. It will be interesting to see what sort of accent, if any, Paul Giamatti adopts when he portray's Cora's "Playboy Brother" Howard Levinson come to visit Downton in the upcoming season four.