Let's see
Epcot, my personal favorite is the Yorkshire County Fish Shop. The wife and daughter don't like fish, so Sunshine Seasons ranks high as well.
DHS I used to like the Studio Catering Company, but this past summer the menu was quite different. Fairfax Faire wasn't bad though
AK The honey chicken at Anandapur Markets is good, or anything at the Flame Tree BBQ
MK I really have two favorites here. Cosmic Rays for the huge variety, and entertainment, and Harbor House because I really love fish, and I like the atmosphere there.