It can be argued that the best thing about San Diego is that it's very hard to find Mexican food that is anything short of truly authentic. Juanitas Taco Shop truly delivers on this: it serves a simple yet flavorful menu of the basics -- burritos, tacos, platos and taquitos. The food is so good it has little blond boys learning how to speak Spanish so they can order their "carnitas tacos con queso y guacamole" authentically. If you have time to hang around, take advantage of the Terminator arcade game they have set up near the entrance.