Puppet keeps me sane, not having to worry with day-to-day managing of a couple of servers.
But the most strange part of the book is the cover: you get a small index, with chapter 7 starting on page 153, and a big red blog "192 pages", so you can only image that it is a big chapter.
But its not. The book has actually 169 pages.
I find it amusing that after all this time, they still haven't fixed the big red blob.