The effort must be total for the results to be meaningful.
A little allegory of the soul - wherever it hides, God will find it.
Fame means absolutely nothing except a good table at a restaurant.
It's a damn shame we have this immediate ticking off in the mind about how people sound. On the other hand, how many people really want to be operated upon by a surgeon who talks broad cockney?
I think most British people who say they can do an American accent are so bad at it. I find it excruciating. I find it excruciating the other way around, too.