'IF I WERE a dog / I'd bite and smell / Bad bites, bad smell / Good dog ..." Thus begins one of Dave Puck's "pounded-metal" poems – or maybe better to say "rants" – punched into found pieces of sheet metal with a hammer and awl. Puck, best known for his short stint on MTV's Real World San Francisco, is an old friend of Linc Real Art owner Charles Linder, whose penchant for battered, shot-up road signs seems to have exerted a strong influence on the former bike messenger's venture into the world of visual art. The poems aren't easy to read and could have used a spell-check, but they make up for it with a kind of overpowering, manic energy that definitely reflects the character of their creator. Some even seem surprisingly sentimental (although there's often a fine line between that and sarcasm). Puck's metalwork shares the gallery space with Gerhard Nicholson's collection of homemade cameras, created over a period of more than 25 years. Each one is unique and takes unique-looking pictures. Their insides are constructed from old-fashioned camera parts, and their outsides are an eclectic assortment of antique machines: a vacuum cleaner, a meatball maker, some that resemble metal diving helmets, and others so esoteric that they are totally unidentifiable. Clustered near the window, the cameras seem to peer out onto Market Street like a bunch of senior citizens sitting on a park bench; they've clearly seen better, more energetic days, but they've aged gracefully, accumulating character but not too many dents or scars. As you bring your face up to their bulbous, headlike shapes and peer into their various apertures, the act approximates an intimate encounter with another person – a presumptuous but permissible intrusion into another's personal space. Wed.-Sun., noon-6 p.m., 1632C Market, S.F. (415) 503-1981. (Lindsey Westbrook)