Canadian Prairies English, influenced by growing up with Swedish-speaking grandparents and years of watching CBC news/documentaries, Britcoms on PBS, and Star Trek (I tend to talk like Spock, even when I'm being casual). One of my high school teachers said he could tell that my ethnic background is Swedish because of my accent. I hadn't thought it to be that noticeable; it's true that particular words and phrases tend to come out the way my grandfather pronounced them.
There are a few inaccuracies in the Wiki article. I grew up saying "couch" instead of "chesterfield." And we do so know what a "bluff" is when applied to geography. In fact, I'd never heard of the other reference for that word, although come to think of it, maybe that's how the town of Bluffton, Alberta got its name.