Synchronistic Memes

Not actually memes, now that I think about it, but madlori brought up what she calls "secret books" and linaerys asked about comfort books.

So, I'm interested in both. What books do you feel like you're the only person who knows about them? What books do you turn to for comfort?

In my case, Terry Pratchett is my number one comfort read. My mood may determine which of his books I pick up, but if the specific one I'm yearning for is inaccessible, I can still find something in any of his works.

For secret books, I selected two by Janet Kagan, Hellspark and Mirabile.