Wendy, brilliant idea for a thread.
There are many books & a few documentaries on English "as she is spoke" in various parts of the world. I'll do a search.
@aristo: One was on the amazing regional differences in the US.
@paul: Good one! Bush W (dubya) didn't fare any better.
In Canada surprisingly, considering the size of the country, we don't have any noticeable differences, except for Newfoundland. They speak another language entirely:
http://preview.tinyurl.com/6et6u8
but they have some lively music:
http://www.youtube.com/watch?v=FODj93HT5tQ&feature=related
We also have the world's longest border, yet you step across the 49th parallel & your neighbours have a different accent. Even after 200 years. Go figure!