We watched for months as that place slowly went up off Highway 67. When they put up the sign, when cars started appearing in the parking lot, we started the calling. Are you open yet? OK, but when will you open? At last, a Pappadeaux opened in Southern Dallas--specifically, in Duncanville. It instantly became the No. 1 dining destination for us South-siders. In fact, if you go there on a Sunday, when the church crowds arrive in a steady stream, four generations at an extended table, you'll glimpse a perfect cross section of Dallas County's upwardly mobile black middle class. The Baptists come in the first wave, then the holy rollers at 1 p.m. or 2 p.m., all decked out in fancy hats and colorful suits. It couldn't be a happier place: Though there's usually a wait, everyone leaves satisfied after filling up on Pappadeaux's exquisitely fresh, generously portioned seafood plates. We like living in Southern Dallas. Now, we finally have a reason to dine there, too.