ElieM: Is there a significant difference between Frito Pie and Nachos other than the variety of toppings?
I'm not from Texas, but one of my grandmothers lived in San Antonio, so I can speak to this. Frito Pie is, in its traditional form, a small bag of Frito's open up with chili, cheese and onions plopped in. You would eat it right out of the bag.
Today, the idea of eating a bag of Frito's alone makes me a bit queasy, but the idea of having a Frito Pie brings back some fond memories of time with my Gram.
Also, concur with previous comments about the wealth of restaurants in Houston and along the coast versus Dallas.