Cafe Degas!
And, my best friend in NOLA was the GM of Commander's for many years. I think it has to be one of the best LUNCH values in town (when compared to the same fare prices at dinner).
Also, Dickie Brennan's Steakhouse, which is way more than "just steak" and has the intriguing "your price in dimes is the outside temperature" special. Good when a cold front hits NOLA and it's 80 instead of 95!
Or, Fiorella's, by the French Market, for that old diner experience and the best fried chicken and pork chops on the planet... but don't expect posh there!