I've never had anything at Coral Reef other than seafood, but I've liked all that I've had. The mahi-mahi and tilapia meals are very good. On my last visit, I had salmon and orecchiette with leek fondue and it was phenomenal. I do miss the catfish dish that they used to make. Our server told us during our recent visit that Chef Marco's decision to pull that dish is the source of much disappointment and that he hasn't given a reason for it, but that Disney no longer farms catfish, so finding an acceptable source for the fish might have been Chef Marco's problem. Rumor is that it will return seasonally, so if you like catfish and it's on the menu when you're there, I wouldn't hesitate to order it.
As for desserts, the boyfriend and I always order the same things: the Chocolate Wave for him, butterscotch crème brûlée for me. There are other things on the dessert menu that we feel we would like, but we can never resist the temptation of our old favorites.