Holy cow, they have the best burgers in town. And their fries might be as good as McDonalds. Disclaimer, i actually can't recall if I have had any burgers in Charlotte apart from five guys.
Warning for those who have never been, the regular is a ridiculously proportioned concoction, half a pound I think? And the small is 1/3 of a pound.
Also, for those of you who are in-n-out fans, I urge you to try this place. I think the fries are better, and the burgers are definately comparable.