I spent last Friday evening at the bookstore, in search for copies of The Year's Best Fantasy and Horror 2008. While browsing through the shelves of the fantasy/science fiction section, I saw this:
It was the lone copy of Nick Gever's Extraordinary Engines. It wasn't even "on" the shelf but atop some books. Thinking this is a message from God, I eventually bought the book.
Other interesting observations is that copies of Neil Gaiman's The Graveyard Book are completely gone, even if they were readily available a month ago. Contrast this to Stephenie Meyer's books which have abundant copies that never seems to run out (and it never fails that I always see someone either inquiring or purchasing a copy).