Got a couple of hours to kill on a Sunday morning? (Or any other day of the week, for that matter?) Try this Chinatown wonderland off Greenville Avenue and Main Street in Richardson, where the waitstaff strolls through this gargantuan restaurant with wagons full of goodies familiar (shrimp-and-scallion dumplings, fried rice, sautéed Chinese broccoli) and mysterious (soup with "1,000-year-old eggs," we kid you not) and always delicious. Maxim's, so named for a legendary Hong Kong eatery, offers the best dim sum experience in town: Eat till you can't talk, and wash it all down with the pur tea that seems to make room in your tummy for more of the pork barbecue-stuffed buns or the steamed shrimp balls (yeah, yeah--who knew they had 'em, got it). Arrive early, before the 11 a.m. rush, and stay late or just move in; you'll be back next weekend, anyway.