The funniest one I've seen has to be that one book, what is it "48 Laws of Power" or something? That's just packed with translated old Arabic poetry and ends by praising Mao and calling people who think they can learn leadership from a book dumbasses. IIRC the forward is something like "so yeah this book is mostly based on the bullshit that I've seen the worst people I've ever known do, plus some literature I think is cool," too.