Do you have any comfort reads that you go to after having a tough day?

I'm not necessarily talking about books that will make anybody comfortable and feel all warm and happy inside. Could be any type of books. I'm not passing any judgment, and I have a friend who loves watching graphic horror movies at the end of a stressful day, so I know different strokes for different folks.

For me personally it's childhood books and I have a soft spot for them and they remind me of good times, perhaps times that things were less complicated and more predictable.

I'd be interested to hear about your favorites.