Over the last holiday break I finished Managing Humans by Michael Lopp. Lopp's no-BS writing style combined with his knowledge of software, business, and management is a powerful combination. I've been a fan of his blog for years and while much of Managing Human's content can be found there the book provides a nice collection and is well worth it's space on the bookshelf or eReader.
Much like his other book Being Geek each re-read offers valuable insight that was missed before.
Some quotes that stuck with me:
busy is usually tactical, not strategic.
in the absence of information, people will create their own.
A good manager is a person who is playing to a strategy and isn't merely stumbling around squashing fires all day.