Shortly after Seinfeld ended in 1998, Jerry Seinfeld did an HBO special called I’m Telling You for the Last Time. He wasn’t kidding–after that performance the master of his domain retired all his old stand-up material and started over from scratch. During that period he made surprise appearances at New York comedy clubs, notes in hand like a novice, to hone new jokes and his timing. Christian Charles’s 2002 film Comedian documents this process. Venting, Seinfeld says at the beginning, “I’ve got like two bits, and the rest is shit.” And after he’s developed a full set: “I feel like I’m getting the same laughs now, on the same merit system, that I got in 1979 when nobody knew who I was.” The new stuff applies shrewd observational humor to contemporary life, employing characteristic Seinfeld-isms impeccably delivered. Remarking that he’s supposed to get a colonoscopy he adds, “I will draw the line here and say no to the pooparazzi.” Only single seats were still available at press time for all four shows. Fri-Sat 5/19-5/20, 7 and 10 PM, Rosemont Theatre, 5400 N. River Rd., Rosement, 847-671-5100 or 312-559-1212, $45-$75.