Another vote for Morocco's Restaurant Marrakesh. The building was beautiful and the music and dancer were great entertainment, but the food was lacking. Several times we gave it a try, as we love this cuisine, but the little counter service, Tangerine, offers far better meals, hands down, for a lot less money.
While I enjoyed Rose and Crown, Raglan Road had far better food which was very similar in description and region, but with the addition of live entertainment. Raglan Road is in Downtown Disney, and those restaurants do not have as "captive" an audience as in the parks, and I think it often leads to far better food. Wolfgang Puck Express, Earl of Sandwich, Raglan Road, and Fulton's come to mind as examples.