Tamora Pierce, Phillip Pullman, and Christopher Paolini have collaborated to produce a nine-episode podcast discussing such varied topics as worldbuilding, religion, inspiration, and animals. The entire series is available at one convenient imaginary location, and I recommend it solely based on the cast. I'll certainly listen to it myself when I get the chance.
I think my opinion of Tamora Pierce has been made clear. While I might not believe that Shakespeare is a demigod of the stage, I will gladly concede that Pierce is a demigod of the young adult page. My thoughts on Phillip Pullman are a little more complicated. I think he is a very good writer, and the series that brought him to my attention - His Dark Materials - is really a remarkable piece of fiction. However, it isn't that I object to his philosophy, but rather that I think he pushes it little too hard and makes it a little too obvious. Pullman is for me what many people have told me C.S. Lewis was for them. Descriptions of Paolini's books have never called out to me, but if he impresses me on this podcast, I may have to give them a chance.
In any case, enjoy! I'll post more thoughts on the series when I've listened to it myself.