I love Kona Cafe at Polynesian. Tonga Toast (a banana stuffed french toast) is their specialty. I also love the sweet potato pancakes at Boatwrights at Riverside. If you enjoy buffets, try Boma at Animal Kingdom Lodge - lots of different items (quinoa, pap, Frunch juice) as well as standard American fare (omlets, carved ham, eggs, bacon, sausage).
I'm not personally a huge fan of breakfast, but I always have to go to Chef Mickey's once while @ WDW!!! My preference, 1st thing (I have a 7am ADR), I like to get to the parks bright & early.
we enjoy Kona, GF Cafe & Whispering Canyon. And Cape May Char Breakfast we do this one around 10. That way most of the families rushing to get to the parks have left & the kis get more time with the Charaters.