Well, we haven't been to all of them, but:
DHS: Brown Derby, this is one of our favorites over all
At the resorts: Jiko and WCC
Epcot: Rose and Crown
AK: for CS: Flame Tree, used to be Tuskers when it was CS.
No fave TS here yet.
MK: CP, food is decent but the characters are GREAT!
Boardwalk area: B&C