Professor Drout already had an earlier lecture series ("Rings, Swords, and Monsters") that focused largely on Tolkien; do we really need another one? In my opinion, after listening to both of them, the answer is a definite yes. Drout has enough to say about Tolkien that he isn't just repeating himself here (plus, this newer series gives him a chance to comment on the Peter Jackson movies). And, as in all his lectures, Professor Drout is a joy to listen to, lecturing with plenty of enthusiasm, expertise, insight, and humor.
This "class" is a bit more advanced, so start with the earlier series if you haven't already listened to that one, especially if you're not a die-hard Tolkien enthusiast. But if you're the kind of person who can't get enough discussion of Tolkien, don't hesitate to get this lecture series.
As the title indicates, this lecture series mainly focuses on C. S. Lewis's fiction (the Chronicles of Narnia, the Space Trilogy, Till We Have Faces), though Professor Shutt does spend some time discussing C. S. Lewis's life and his non-fictional writings. Shutt assumes you've read the books he's discussing (at one point in one of the lectures, he says "You've read the book; what do you think?"), and you'll get the most out of the lectures if you're familiar with Lewis's books; but even if there are some you haven't read, or haven't read in a long time, the lectures are still worth listening to.
I found these lectures to be consistently interesting and insightful, and they left me with new appreciation for C. S. Lewis. Shutt is knowledgeable, not only about Lewis's own writings, but about the literary background that Lewis himself loved and was influenced by. Shutt comes across as an appreciator of Lewis, but not an uncritical, gushing fanboy. He doesn't hesitate to talk about what he or others have found flawed or unsuccessful in Lewis's writings in addition to talking about the things Lewis did particularly well. And Shutt doesn't shy away from talking about Lewis's Christian faith and its influence on his writing, but in a way that neither Christian nor nonchristian listeners should find off-putting.