American Southern food rarely gets better than what M&M serves. Not everything qualifies as great, but I haven't had a bad dish yet. The main dishes are (in my experience) always exceptional. The fried chicken at M&M qualifies as some of the best I've had, along with the fried chicken at Hard Knox Cafe in San Francisco.
The ox tails, the liver and onions, etc. all rate far above similar dishes served almost anywhere else.
The corn "bread" (really cornmeal pancakes) is really a treat. The fried okra superb. The collard greens are OK, the same with the black-eyed peas. The macaroni and cheese is good enough, but nothing to write home about.
All in all, though, M&M deserves a five-star rating. Not only do I recommend it, I eat there repeatedly.