We love Chef Mickey's Dinner, Ohana's Best Friends Breakfast with Lilo & Stitch, and Crystal Palace for any meal. -In that order for character meals.
Our most unique experience has been a Chefs de France lunch in which we were able to meet Remy (from Ratatouile) and his wonderful handler. The food was outstanding and with the help of an AP discount, a complete bargain!
For TS without characters we think Trail's End Buffet at Fort Wilderness is delicious. They have fried chicken, ribs, chili, a carving station, yummy vegetables, cornbread and much more! The food is delicious, especially the friend chicken. It is also a real bargain at only $21 for adults and $12 for kids and so we definitely pay OOP. They have some fun, old western style games for the kids on the big front porch. The staff has some of the friendliest and most helpful, you'll find at WDW. (Our waitress even offered to run to the outpost in a downpour and buy a poncho for my 10 year old because he'd lost his! -we wouldn't let her, but she was sincere. During that meal, she periodically would run towels out to the front porch for guests caught in the rain.) If you are looking for a nice night off from the parks, go to Trail's End for Dinner then head over to Chip N Dales Campfire Sing a Long and Movie.