I had the lunch canyon skillet in 2011 (for around $18.99 or so if I recall correctly) and I agree that if its top notch BBQ you are looking for, you wont find it here, but its still very good and of course very filling.
As was mentioned, the best part of the restaurant is the atmosphere. I asked for refill on my glass of iced tea and they brought the tiniest cup in the world with a tiny straw to match! Then a little later I asked if I could have a "few more ribs" and they brought out an entire RACK!
In our whole time at Disney that week, one of the things my DS3 enjoyed the most was getting to do the "horse race" where at a random time the cast members line the kids up and let them run around the restaurant on a wooden horse. Really cool.