Here's an MSNBC article from several months ago on the books that many people like to read more than once. Some of my favorites are included in that article.
Here are some of mine:
War and Peace by Leo Tolstoy (I just love to sink into this one every few years.)
Tess of the D'Urbervilles by Thomas Hardy (When I first completed this book, I threw it across the room in anger. A few minutes later, I picked it up and immediately began to re-read it)
Lord of the Rings trilogy by J.R.R. Tolkien (This one needs no explanation.)
Chronicles of Narnia by C.S. Lewis (Neither does this one.)
Bridge to Terabithia by Katherine Paterson (This is another favorite childhood book that I, and my cousin Veronica, still enjoy reading.)
To Kill a Mockingbird by Harper Lee (I just love this one. Always have.)
Twelfth Night, Richard II, and a handful of other Shakespeare plays
Zen and the Art of Motorcycle Maintenance by Robert Pirsig (one of those thinkin' books)
The Second Coming by Walker Percy (about a crazy music student from Mary Baldwin College who escapes the mental hospital and takes up residence in an old abandoned greenhouse in North Carolina. For some reason, I identify with her.)
There are more ... I'll write them down when I think of them.
Meanwhile, I'd love to hear what books my blog readers tend to read over and over again. There is something special about those books that keep drawing us back, even after we know the stories as if they were our own lives. Anyone? Anyone?