Magic Kingdom
CS - Casey's Corner, great hot dogs, great location
TS - Crystal Palace, Winnie the Pooh character meal, good buffet
Epcot
CS - Yorkshire County Fish Shop, take it over and watch the Beatles in the garden while you eat
TS - Biergarten, good food, great ambiance, and lots of fun
Animal Kingdom
CS - Flametree BBQ - ribs, chicken, just good BBQ and nice seating by the river
TS - Tusker House - dinner buffet, or breakfast with Donald & Daisy, can't go wrong, one of the best restaurants at WDW
Disney Hollywood Studios
This one is hard, because none of the restaurants are standout IMO
CS - Can't do it, you're on your own. No good ones.
TS - Prime Time Cafe is fun and the food is good old American fare.