John, I like your accent. With the advent of TV over the last fifty years, American speech has become very homogenized and it's really a shame.
I was raised down the S.F. Peninsula a ways and have a sort of generic midlands American accent but my father, who was raised in San Francisco, has an accent that sound pretty much like someone from the Northeast, as do most of my Frisco-raised relatives. They sound like they hail from somewhere between New York and Boston. I'm told that this is because of the heavy influx of Yankee seafarers into S.F. during the California gold rush of the mid-Nineteenth Century.