Si Señor really brings the heat. An Arizona spin-off of the Castillo family's restaurant in New Mexico, this place specializes in tantalizingly tongue-searing dishes that put our neighboring state's famed Hatch chiles to good use. Free chips and homemade salsas get your taste buds primed, but prepare to rev things up even more with the spicy, luscious red chili con carne. Sure, it's hot, but it's got a complex, roasted chile flavor that shines, accented by chunks of melt-in-your-mouth pork. (If you want to go nuclear, order the chunky green chili con carne; it's just as addicting.) Cool off between bites with a refreshing, unusual sangria margarita (a house specialty), and you could ride the heat wave all day.