Oh...I forgot:
One of my pet peeves here in the South is the use of "might could" or "might would" (as in, "I might could do that"). I've heard people with Master's degrees talking like that here. Of course, they would never write that way, but it's a colloquialism. Another one is "fixin' to" (as in, "I'm fixin' to go to the store").
Oh my! I say fixin' to all the time. Have a friend who was born and raised in TX but lives on the west coast now. The more animated she gets when we're talking the more that TX twang comes out...you can take the girl out of TX, but....
Cindie