There and Back Again

The Lord of the RingsSure, September 22 this year was the Autumnal Equinox, but it is also known as the birthdays for Bilbo and Frodo Baggins, by Shire reckoning.  It is also this time of year that I inevitably pull down The Lord of the Rings from the shelf and start the adventure anew.  Now, yes, "There and Back Again" actually refers to The Hobbit; however, the birthdays call me to the adventure of Frodo and the One Ring, along with the trials of the others in the Fellowship.  Is there a book that you read over and over again?  One that because of its atmosphere or element of story, you read during a certain time of year?  Is there a story that you always enjoy taking you there and back again?