Predictably Irrational: The Hidden Forces That Shape Our Decisions

One of my all-time favorite books. Amazing insight into human psychology with a great sense of humor. Loved it!

The Upside of Irrationality: The Unexpected Benefits of Defying Logic at Work and at Home

One of my all-time favorite books. This is the kind of stuff that really intrigues me. Understanding one's own psychology for better decision making and overall functioning. I prefer you read the first book though, Predictably Irrational, before reading this one.

The Other Kind of Smart: Simple Ways to Boost Your Emotional Intelligence for Greater Personal Effectiveness and Success

Great stating point into EI. Easy read and contains lots of common and not so common sense advice.

Rework

If you own or are starting a business, this book is a must-read before! Written by one of the founders of 37signals, it contains a series of targeted advices on how to run your business and deliver your product or service in the best possible way to your customers.

Don't Make Me Think: A Common Sense Approach to Web Usability

A classic starter in the field of usability. Content is very well presented and the use of illustration really helps convey the message. Highly recommended for people getting started in Web usability, including web designers and developers.

Forms That Work: Designing Web Forms For Usability (Interactive Technologies)

Awesome book on Web forms usability. Short and to the point. Lots of examples and funny illustrations. I've used this book as a basis for a public presentation I gave (in Arabic).<br/><br/><a rel="nofollow" target="_blank" href="http://vimeo.com/9488513">http://vimeo.com/9488513</a>

Steve Jobs: A Biography