I'm in the middle of re-reading Lord of the Rings at the moment. It's been about a decade between each re-read. What I find fascinating about the book is how I've taken away very different (but enjoyable) experiences each time I've read it.

Reading it as a teenager, the excitement and adventure dominated, and I was probably more interested in characters like Frodo and Aragorn. As I've aged, I've found more depth in the book, more complexity... and eventually come to see Sam as more interesting and heroic than I ever did as a teenager.

It's just interesting to me how much the book has different things to say, depending on one's life experience when reading it.