Old South in Russellville is famous for two things. 1. Their great tasting house salad dressing and 2. Their smoky atmosphere. They are open twenty four hours a day and serve anything you want, all day long. They are always busy, even at 2 am on a Wednesday morning. They always have friendly wait staff and their food is always cooked made to order. The restaurant has an old-time fifties feel to it. I don't eat there often, because of the smoke, but the food is always great.