My vote is Boma. We used to be big on Crystal Palace, but out 10:25 ADR got us seated well after 11, with the few remaining breakfast items being cold or warm (depending on which it wasn't supposed to be - cold waffles and warm melon aren't good.) We knew we were at the tail end of breakfast (which is why we chose it - brunch instead of an early lunch that day), but we were pretty disappointed. (And the night before, we waited almost an hour past our ADR time for Trail's End, which didn't make waiting at CP any easier.)
Others which are pretty good are Tusker House (which is kind of Boma-lite - no zebra domes, but the rest of the food is pretty representative of Boma, actually) or Biergarten.