Nostalgia for the Out-of-Print

I saw the other day that a Goodreads group, Endicott Mythic Fiction, is doing my first novel, A Scattering of Jades, for their February read. They are of course all buying the book for a nickel because it's been out of print for a while. I got a little maudlin about this and then started thinking about favorite out-of-print books...remember when (for example) lots of Phil Dick's books were out of print? My favorite out-of-print book as of right this minute is probably Michael Kandel's Captain Jack Zodiac. Yours?