Accents

I have a definite Southern accent. I was born in Texas and have lived here my whole life except one year I spent in Michigan where, the moment three words came out of my mouth, people would immediately ask me where I was from. Here's a few things that were apparently dead giveaways:

-I'm not "about to" go to the store. I'm "fixin' to" go to the store.
-I don't think the words "you guys" has ever come out of my mouth. "Y'all" is all I've ever said. Note the positioning of the apostrophe. You + all = Y'all, not Ya'll.
-"Ain't" comes out of my mouth more often than I'd like it to.
-Words like "tire" come out sounding more like "ta-err" to Northerners. My r's sound really emphasized to the non-Southern ears (according to my friend from Michigan).
-I do not enunciate. My words run into each other very badly. This is something I really would like to fix in the near future. No one wants a doctor that sounds like some backwoods redneck.

It would be really neat if people attached a clip of themselves talking (if they feel comfortable with it, of course). I have no idea what a "Utah" or "Newfoundland" accent sounds like.

Jam it back in, in the dark.