50's Prime Time - Love this place. The interaction with the cast members and other guests is hysterical especially when you know that some of the other guests didn't know what they were in for. If you don't like to really get into the show and would rather be left alone to eat then I would skip eating here. The pot roast is excellent and people live and die by their fried chicken.
Mama Melrose - Have never eaten here.
Coral Reef - decent food, a bit pricey, fun to watch the fish.
Whispering Canyon - Have never eaten here.
Boatwright (this is where we will be saying) - Have never eaten here.
Liberty Tree Tav - ate here last October. They have stopped the character dining so I hope that's not what you were looking for. If so then you need to find another restaurant. Good food. I don't know what they put in the mashed potatoes but I asked for another bowl.
Crystal Palace - We eat here once, twice, sometimes three times a trip for breakfast. Have never eaten here for dinner. But we love the CP breakfast. The Breakfast lasganga is probably the best thing in the whole WDW complex. Well one of the best.
Chef Mickeys Breakfast - decent breakfast, huge restaurant. I felt that the characters seemed a bit rushed versus some of the other character breakfasts.
Yak and Yeti - have only eaten at the CS. Decent food. Something different than burgers, pizza and barbecue fot he CS. The pics I've seen of the TS seem nice.
Some other suggestions:
MK: Tony's is great and you can get a decent view of the parade if you time a lunch ressie right.
DHS: nothing to add.
Epcot: I love Marrakesh. Great food and fun entertainment. The food is not as adventurous as it sounds.
AK: TS at AK is new and I've never eaten at any TS restaurant in AK. We usually stick to Flame Tree.