For me, it's actually the book of Job, which happens to be one of my favourite books.
The way Job steadfastly maintains his innocence, and questions God, as well as rebuffs the three comforters (who proffer arguments along the lines of mordern apologist, although in this book they are "bad guys" ) made him my hero of sorts throughout most of the book. If most people today questioned god the way he did, they would probably be condemned for it.
However, at the end, when god himself speaks to Job, it all falls apart. Job turns into an apologetic blob of jello once god tells him "I'm more powerful and wise than you. Who are you to question me? Hell, I kill dragons, you can't!"
That attitude about god's authority is essentially promoted througout the entire bible. Here god had unjustly taken away most of what Job had possesed (a bet with the devil is not a just reason, and Job was "blameless", hence not fit for punishment), and he didn't even as much as offer an apology for the inconvience he had caused. He simply asserted his (god) right to do whatever he wanted to whomever he wanted, objective fairness be damned (sounds kind of like US foreign policy
Other nominations:
Book most likely written by guy who needed anti-depressants: Ecclesiastes
Book most likely written by guy on some serious drugs: Ezekiel, hands down. Daniel and John of Patmos have nothing on this guy .