Peter Seibel's Coders and Work also provides an interesting perspective. As the title implies, it focuses more on developers than founders...although in some cases, the developer being interviewed was also a startup founder.

Some of the interviews give an interesting look at the early days of some companies, too. I found jwz's interview provided some good insight into the early days of Netscape, as well as the reasons why the company started to go downhill.

I quite enjoyed this book because it gave insight into the hard work and dedication that characterised many individuals, such as Max Levchin, the co-founder of Paypal.

As an aside, I also recommend Hatching Twitter by Nick Bilton. This book details the tumultuous roller-coaster ride that was the early days of Twitter. I feel it is an essential read to truly understand the mentality, minds and drive of many within the start-up world.