The accents around my neck of the woods are notoriously awful, I could bitch all I want about southern drawls and Brooklynese but in reality they are incomparable to the heavy backwoods tripe that I deal with on a daily basis.
Some of the accents are so heavily rhotic it becomes unintelligible and indistinguishable to outsiders. I still can't understand my grandmother distinguish between the words "tower" and "tire," and to exacerbate things there are idiots around here that add a drawl to their tongue for no apparent reason other than appearing as backwards as possible. As a result I'm fairly positive most visitors to this region think us myopic troglodytes incapable of intelligent conversation. Which probably isn't far off base.
EDIT: See this big-ass green blot right in the middle? Yep, that's me.
http://upload.wikimedia.org/wikipedi...ght_merger.png