Combine all ingredients except buns in a 4-quart slow-cooker; cook, covered, on high for 5 to 6 hours, until very tender. Drain and slice or shred pork; serve on buns with additional barbecue sauce, if desired. Serves 8.
Tip: Pork can be made 1-2 days ahead; refrigerate covered and reheat before serving.
Per serving: 320 calories; 29 g protein; 9 g fat (1 g sat); 490 mg sodium; 65 mg cholesterol; 28 g carbohydrates.