I think this has beat out Lord of the Rings for my favorite fantasy series of all time. The characters (Dave!), the lore and the inspiration it takes from real world mythology, and the way Kay writes emotion make it so wonderful. Also, one of the most romantic fantasy books I've ever read, especially the moment where Guinevere and Lancelot meet again. I love that their story spans hundreds of years and different worlds and they still find each other every time. It was all so beautifully written.