For me, breakfast biscuits rank alongside BBQ as one of the unique foodways of the Carolinas. Not unique like liver mush in that they are available here but rare elsewhere. Rather, I mean uniquely good. They're also available as a fast, carryout item from a lot of places.
When all else fails (in reality, much more often than that), Bojangles or the more rare Biscuitville suffices. I'd like to exclude places that serve biscuits as part of a sit down meal. I'm thinking more about locally produced fast or slow food. What about the smaller places? Here are a few I've gleaned:
In another post, Naco recommends Flo's Kitchen in Wilson. t's a little drive-in that's open until around 1pm or so and does really great breakfast biscuits. They cook a mean pork chop, too.
In Raleigh, Taylor's Wines, the gas station just north of 540 on Six Forks, serves 4 varieties of homemade biscuits. They're quite good, though different than you'll find elsewhere.
In Carrboro, Neal's Deli is supposed to serve a great biscuit, though I haven't tried it yet.