Well, I suppose its only fair for me to post my faves. I don't know of any place I dislike.
At the MK, I always eat at the Columbia Harbour House. I always get chicken fingers though, I'm not much of a fish person. The Plaza Pavillion had good pizza. Well that least the one I had. It was better than Pizza Hut. And the side salad that came with it was really really really good.
Epcot: Sunshine Food Fair. I've only remember what I had last year, which was a BBQ chicken sandwich, which was extremely good. And the Lotus Blossom Cafe. I noticed a lot of people don't like it. But I live in an area where every street corner there is a chinese restaurant, and this place has better food than what I can get here.
MGM and AK: Unknown!