If you've noticed some especially confusing traffic signs around downtown San Francisco in the past year or so, you may have witnessed the work of Anthony Discenza. Through his "Street Signs Project," he has peppered Minna Street with poetic interpretations of the city's usual dry dictates. "A lapse into the romantic enables us to avoid the hideous realities addressed," one such sign advises, its philosophic tone moderated by an officious sans-serif black font and thin black border. Instead of days and times, a playful take on a parking sign lists "Le Menu," featuring "Monday: Rib Meat; Tuesday: Leg Meat," and so on. Like a subtle version of graffiti, Discenza's signs force us to reconsider our relationship with the cityscape, and with the rules that govern our behavior there. His show at Catharine Clark documents some of the street signs, and includes new media work such as an audio installation.