I grew up with the Andy Griffith Show. I knew from a young age that it was for real. Nobody on the show faked their southern accents. The yankees: Barney, Floyd, Bee, Opie, et. didn't try to pretend with long drawn out aaahs and all the crap that television did and still does to southern characters. The Southerners: Andy, Goober, Gomer were just as genuine.
As a Southerner with an ear for patois at a young age it was refreshing to hear genuine dialogue.