So let's get to some books, shall we?
Abraham's short fiction proved as multifaceted as his novels. Leviathan Wept is a varied and powerful work, capable of terrifying you with one story and warming your heart with the next. The collection was brought down slightly be a few slightly weaker stories as it went on, but this is still an essential read.
Thomas Ligotti's first nonfiction work is as insidious as his short fiction. The ideas presented in The Conspiracy Against the Human Race are interesting and well argued, if not always persuasive. I didn't put this in the upper list because I've no idea how one can conclusively state that a book of philosophy is "better" than a book of fiction, but this is a work that had to be mentioned in any proper summation of the year.