I'd like to point out that most of the restaurant recommendations that this board gives are for restaurants OUTSIDE the parks. I generally don't spend that much time outside the park, so if you're like me...
Epcot: 1) Biergarten, 2) La Hacienda de San Angel, 3) Les Chefs De France / Rose & Crown (tie). The counter service is great at La Cantina de San Angel, and Garden Grill (I think it's called) at The Land has lots of selections - like a food court.
Hollywood Studios: 1) Brown Derby, 2) Sci-Fi Drive In, 3) 50's Prime Time Cafe
Magic Kingdom: 1) Cinderella's Royal Table, 2) Skipper's Canteen, 3) Liberty Tree Tavern
Animal Kingdom: For some reason we don't eat at sit-down restaurants here. I dunno...