Lost in one of the threads is a bit about Cockney's and Heagles, and Howls and 'awks.
In part of Appalachia, (US), Its becomes Hits, but only when Its is first word of the sentence, or some other very special circumstances.

Which brings me to the one feature of "standardised" US accent that grates like a verbal fingernail across the blackboard of my soul - why do so many Americans, almost all whom I have heard, pronounce herd and herbal as 'erb and 'erbal. Many seem to say yuman instead of human. Does anybody know how this speech pattern developed?

P.S. for any who are not familiar with "blackboard" think "chalkboard." I was going to modify it in the body of my post, but then I recalled my encouragement to Avy to celebrate his own unique English, and so decided not to.