Reginald D Hunter is an American comedian living over here. He regularly appears on shows like QI and when he came to Cambridge, I had to go see him.He came over the England when he was 27 years old and as far as I can tell he has not lost his accent at all.
I think that this is a good example of his style of humour. I really like him! If you get a chance to see him do go. I think he highlights the differences that we see but in a kind an gentle way as not to offend anyone.
All the Best!
American to Britain