And then there are the errors in American usage to go along with the accentual ones. The most prominent error of this kind imo is our use of "gotten," which appears in British novels (and occasionally on TV) in places no American would ever use it -- Q: Do you have the book? A: Yes, I've gotten it with me.

As for British attempts at American pronunciation, I'm afraid we don't do any better. When an American attempts to sound British, he tends to drop in and out of the accent. There's simply no consistency.

Lee