The Steve Jobs bio is a great read that gave me an insight into Steve and what he did to build Apple. It is all about focus and determination.
The Emyth is an oldy, but a goody. A good read if you are starting out or feel like your business owns you, it helps to get your mind round the difference between having a job and having a business.
This is one of my favourite social media books, just because it lays out EVERYTHING in an easy to understand way that makes it a great resource for complete newbies through to those with more experience.
Enchantment is not ground breaking in terms of content, but it does cover off a lot of customer service and ways to enchant your customers that is a good reminder.
Finally Outliers is one that initially I didn’t think much of but it has grown on me. Malcolm Gladwell looks at what it takes for people to become successful and what factors influence that.