Don't know exactly what you're looking for, but for us, these are some of the things we like:
Magic Kingdom
Colombia Harbour House-good fried fish and chicken, we like the (usually) empty and quiet upstairs seating
Casey's Corner-the best hot dogs
Aloha Isle-for Dole Whip floats, of course!
Epcot
Fountainview Bakery-yummy iced coffees
Cantina de San Angel-decent Mexican food
Yakitori House-sushi rolls and iced green tea
Harry Ramsden-fish and chips
Animal Kingdom
Tusker House-great salmon
Chakranadi Chicken Shop-chai tea
MGM Studios
the stands on the way to Tower of Terror/Rock n Roller Coaster-chili dogs
Polynesian
At the counter service place near the pool they had an Island Chicken sandwich that I really liked.
And of course, take out coffee at the stand near the monorail!