My favorites and would recommend to anyone:
Romantic- Jiko absolutely fantastic food and wonderful atmosphere and service
Character Meals- three way tie between Chef Mickey's, Crystal Palace, and Akershus (it depends on what characters are your favorite )
World Showcase-Nine Dragons great food good service (as long as you don't mind the lively atmosphere. . .it can get loud pending when you dine)
Best Themed- Sci Fi, who doesn't like to sit in a car and eat dinner while watching clips from old black and white sci fi movies
For me it would be Coral Reef - it's just such a cool place!
Crystal Palace for b'fast before park opening - the restaurant is bright and airy, the characters are sweet, the buffet is good (you really can't mess up b'fast). But the best part is walking down Main St. and seeing the Castle without hundreds of other people - priceless!