To clarify my biases, let me first say that I am from Texas. However, I intend this more as a point of American pride than a south vs. north thing.
Now, onto my thesis. American Southern food is the best in the world for two "meals": breakfast and dessert.
I'll start with the obvious first. Nobody puts as much emphasis or effort into their breakfast as they do in the American South. Unless you prefer a baguette and some butter for breakfast (in which case what are you doing on chowhound), I can't see anyone disagreeing here. From the simplest (for the south) breakfast of eggs, grits, toast and bacon to the overly indulgent options of French Toast or Steak and Eggs or Salt Cured Ham or Biscuits and Gravy, the South has the best breakfast. I mean, come on, steak and eggs is a dish down there.
On to dessert which i think is a lot less clear cut. While French and Italians have pastries and chocolate, I still think the American South wins out. Any fruit cobbler or pie, bread pudding, bananas foster, pecan pie, red velvet cake and everything else using lots of butter swing my vote to the south.
I'm writing this for two reasons. First is that i'm bored at work. Secondly, i want to encourage disagreement or alternatively see if most people agree with me.