As legend would have it, the Bob Armstrong Dip at Matt's was christened after the former Texas land commissioner of the same name because he came up with the recipe for the specialty item during his frequent visits to the original Matt's in Austin. Also known to insiders as Bob Dip, it is a tasty appetizer chock-full of hot melted cheese, guacamole, sour cream, and taco meat. Choose only the strongest of chips, because the thickness of this queso can weigh them down. Of course, it can do the same to you if you get the bowl rather than the cup. We recommend the bowl.