Favorite... A tie between Paris and New Orleans. Paris used to be in the lead, but Cajun and Creole cooking... mmmmmmmmmmmmmmmmmm...
Least favorite... Don't have one, really. I could pick Allentown, PA, where they rolled up the city at 5PM... literally. Or Red Oak, Iowa, where there were two stoplights and four national chain restaurants (assuming you consider Dairy Queen to be a national chain restaurant). Or perhaps Napoleon, MI, where I got a ticket from a cop parked next to the doughnut shop (no kidding!).