Before finding this site, I planned our entire first trip using Allears.net We ate at 50's Primetime, Crystal Palace, the habichi grill in Japan which has since changed its name, CRT, Grand Floridian Café, Liberty Tree Tavern and Chef Mickey's.
I would now add to go to Tusker House, BOG for lunch, Biergarten, Ragland Road and Sanaa. Kona Café breakfast is awesome too.
Other QS I would suggest are:
MK - Columbia Harbor House, Pecos Bills
EP - Tangierine Café, Pattisserie in France, Sunshine seasons
AK - Flame Tree BBQ
HS - not a fan of them - I took a boat over to the Boardwalk for lunch last time I went
DS - Earl of Sandwich has my favorite tuna melt and Wolfgang Puck Express