DAVE CHAPPELLE's career has been reasonably quiet of late, considering he was the biggest name in comedy, and arguably in entertainment, not even two years ago. Since ditching Comedy Central's "Chappelle's Show" and staying out of the headlines, he's been quietly performing new material to the delight of fans everywhere. He brings his socially aware and racially charged satirical humor to the Tabernacle Thurs.-Sat., AUG. 23-25. Last time he was in Atlanta, he surprised the crowd by bringing out rapper Mos Def as an opening act before telling jokes for almost two hours; who knows what tricks he's got up his sleeve this time around. $55. 7 and 10 p.m. 152 Luckie St. 404-659-9022. www.ticketmaster.com.