Along the Parkways, not sure. But if you venture off the Parkway onto I-77, at the NC/Virginia border there's a BBQ joint called Wallace Bros.
From VA, exit at the last VA exit, go under I-77 and turn right and right again. You cannot see the restaurant from the Interstate.
From NC, take the first VA exit (Exit 1, I beleive), turn right and right again.
Its the real deal NC style BBQ pork, chopped or sliced. The slaw is a Lexington style (vinegar and red pepper) and the hush puppies worth the stop alone.