there are so many good restaurants to try - three questions that would make my recommendations more suited to you would be: budget, children and transportation...these considerations can really make a difference in where you go-
if there are no restrictions, our family really enjoys:
BOMA - plenty of selection for every palate and a great hotel to walk around after dinner
California Grill - good food, upscale dining experience - very good pork tenderloin and flatbreads
Kona - always good food
Chefs de France - good food that is not too heavy
Tappanyaki - fun presentation and tasty Japanese food
The Grand Floridian Cafe - surprisingly good, basic food - pasta, steak, etc
The Yacht Club Galley - not great atmosphere but the food was well prepared
Earl of Sandwich - (Downtown Disney) - great sandwiches and soup - very reasonably priced
Wolfgang Puck Express - (Downtown Disney) - able to get good food at a very reasonable price
Yakitori House - good lunch spot
Columbia House - good tuna sandwiches and soups
Off site we really like Seasons 52 and Tchoup Tchoup
have a wonderful time!