This trip, Guy Fieri's going fanatical for Phoenix-area fare! First, Irish pub grub meets Southwest style with killer corned beef and cabbage taquitos plus a lamb shepherd's pie. Then, a family-friendly eatery is bringing smoke and spice to their dirty Cajun pasta and wood-fired pizza, and a neighborhood taqueria is redefining a Mexican street-food fave with a crunchy beef option and gourmet garlic mushrooms.