Inspired: How To Create Products Customers Love (http://www.amazon.com/Inspired-Create-Products-Customers-Lov...) - The best if not only required reading for product management
Peopleware (http://www.amazon.com/Peopleware-Productive-Projects-Teams-S...) - Great read on managing and understanding people as it relates to organizations
Managing Humans (http://www.amazon.com/Managing-Humans-Humorous-Software-Engi...) - Obviously on management, you can read much on this http://randsinrepose.com/, though the book does a great job of consolidating it
Inspired: How To Create Products Customers Love (http://www.amazon.com/Inspired-Create-Products-Customers-Lov...) - The best if not only required reading for product management
Peopleware (http://www.amazon.com/Peopleware-Productive-Projects-Teams-S...) - Great read on managing and understanding people as it relates to organizations
Managing Humans (http://www.amazon.com/Managing-Humans-Humorous-Software-Engi...) - Obviously on management, you can read much on this http://randsinrepose.com/, though the book does a great job of consolidating it