Wow, so many to choose! I have lots of favorites at Disney.
There are plenty of things I like from each park, but I'll try and stick to one major one from each...
Epcot: Marrakesh (Morrocco Pavilion). The kabobs are delicious (and good for the picky eaters), as is the couscous. Belly dancers for entertainment are great.
Disney - MGM Studios: I love the burgers at Sci-Fi. They also have good milkshakes, and for adults you can get the Marsha's Martian (chocolate milkshake with baileys, kaluha, and vodka).
Magic Kingdom: Tony's Town Square has some great Italian food. I'm a fan of the calamari, and the eggplant Rotini. LTT is great for lunch as well, I normally get the Old Glory Burger, and Russel is always our server (he's the best).
Disney's Animal Kingdom: I know there are no TS restaurants, but AK has some amazing food offerings. I'm a fan of Tusker House in Africa (especially when they have coconut-crusted chicken), and the food at Flame Tree Barbeque is smoked right there at the restaurant.
Resorts: I actually have 2 favorites here. My all-time favorite is Ohana for dinner. Peanut sauce is good on everything, and the bread pudding is to die for. My second choice is Artist Point at WL. The buffalo is great (I've heard the salmon is amazing, but I don't eat the stuff

), and I could live off of the mushroom soup.
Downtown Disney: Lots of choices here no matter what kind of food you like, but I must say I always find myself at Earl of Sandwich. I get the origional (extra meat and horseradish), and some of the tomato soup. I hate tomato soup, but theirs is sooooo good.
I eat at way too many Disney restaurants in general, but these are my top ones.
