We usually do Pecos Bill's at MK. I love the chili.
At DHS, I got a great Greek salad at the backlot last time I was there in Jan. 2009, and I go back and get the same thing again.
At AK, I love Flametree.
At Epcot, I vote for the ham and cheese croissant or baugette at the French Patisserie, or the Yorkshire Fish and Chips. The Moroccan food is good too, but I make stuff like that at home whereas I don't make croissants or batter fried fish at home.