On this trip, Guy Fieri's checking out all kinds of food across Flavortown. In Boulder City, Nevada, a chili-churning diner is keeping it all in the family. An old-school breakfast spot has gone big with four locations around Arizona, and in Salt Lake City, a taqueria's still cranking out burritos as big as your head. Plus, in San Diego, Guy's paying tribute to an old buddy and DDD O.G. -- the Boss Man himself -- and his burgers.