I think I'm concurring with everyone:
AK - Flame Tree BBQ - great ribs, pulled pork, and the salad option is good too.
Epcot - Sunshine Seasons for variety - or Tangierene (sp?) cafe for value (it's like a $14 meal for your CS credit and good food too!)
MK - We like CHH - really like the fried shrimp, the salads are really good too. Plus, you always can find a table somewhere in there! Plus one of my favorite CS desserts, the Apple Cobbler.
DHS - We tried Backlot Express last trip, and it was decent if nothing special. Agree DHS does not have any "cut above the rest" meal choices. We also don't mind the outdoor area by Sunset Boulevard because there are at least a lot of choices, if not too many good ones.
DTD - Earl of Sandwhich or Wolfgang Puck Express are both really good.