If you're like us, and don't much care for character meals or buffets, I'd recommend Kouzzina for breakfast. Of all of the table service breakfasts we've had on property (which is probably most of them), they have the most interesting menu, and the execution of that menu is superb.
Also, if you're into it, they do a fantastic Bloody Mary. They used to do a great white wine sangria, too, but have since changed the recipe, and it's nowhere near as good as it used to be.
Aside from that, Grand Floridan Cafe and the Animal Kingdom Rainforest Cafe also do good breakfasts. Depending on which park you plan on visiting that day, choose accordingly, I guess.