On this trip, Guy Fieri is digging into dishes featuring some dynamite dough. In Mesa, Arizona, there is a legit Hawaiian joint serving island specialties, including a meaty bun, and in Tucson, Arizona, he stops at a place cooking up a big-time saucy sandwich and spinach dip calzone. Plus, in Miami, Guy checks out a funky shop making sweet artisan doughnuts and turning their pastries into savory sandwiches.