I'm reading "The Lord of the Rings" now for the third time, this time with intent to pay attention. It reads more like a field guide than a novel; Tolkein loves his scenery. I also have started to notice the themes of offering refuge, inheritance/fate, facing the dangers and discomfort of the real world, things I didn't bother to notice earlier, and things you wouldn't get out of it from the movies.
I'm also reading Pilgrim's progress; as ham-fisted and blatant as it is in its message (the art and craft of literature wasn't exactly developed back then), I think it has been a worthwhile read; I wouldn't have otherwise known that Christian's wife set out as well.