There a bits of dialect that become stereotype - "Ya'll" and "Cah" bring instant pictures to mind.
But there are other parts that are more subtle.
In all our visiting and moving and settling into life here in Arkansas, I never noticed the parting phrase, "Appreciate You!" until we came back home from Colorado this summer.
It is interesting for many reasons. I do hear it mostly at the end of business transactions, like at the Post Office. Not matter who says it, it is clearly enunciated - "Appreciate You!" - never " 'preciate yuh." It is always personal. "Appreciate You!" not your business, your help or your money - You.
And it always comes with a smile :-)
Sometimes it comes with more warmth - "We Appreciate You" at the Co-op when I bought wire or "I appreciate You" from Pam who sells us eggs.
I suspect it developed because there are few enough people around here for each one to be special. Many of the towns we drive through on our way to the metropolis of Mountain View (pop 3,786) have thirty-some-odd people. It's easier to tolerate and appreciate individual differences when there aren't too many individuals.
It's also hard to get around up here in the Ozarks. That's a big part of the reason we moved here and we saw it as a plus. But sometimes the reality of roads that mean 15 mph on the curves is a little staggering. When it is that hard to travel - you do appreciate your neighbor, and the person who grows your vegetables and the guy who drives the school bus.
I've started using the phrase myself. Try it - the next time someone does something nice, look them in the eye, smile and say "I appreciate you."
I bet that smile will stay on your face most of the day.