"Bang! Bang! Bang! Bang!" Nobody is getting shot, it's just JOHN WITHERSPOON coming to town. With more catchphrases than a sportscaster, Witherspoon brings his patented act to the Punchline SEPT. 1-3. Known for his roles as a funny father, Witherspoon has stolen scenes playing dads in films like Boomerang and Friday. Versatile enough to evoke laughter through delivery, diction or body language, Witherspoon is a true performer. He's also a stickler for wardrobe, so if you have front-row seats, just remember: "You gotta coordinate." $25. Fri., 8 and 10 p.m.; Sat., 7, 9 and 11 p.m.; Sun., 8 p.m. 280 Hilderbrand Drive. 404-252-5233. www.punchline.com.