Second on the list is Rohit Bhargava's 'Personality Not Included' where he talks about how companies are increasingly becoming faceless - without a personality. He elaborates the idea of how one could build an authentic personality for an organization, a combination of a theory and a how to are combined in the book. A very good read.
Next is David Scott's book 'The New Rules of Marketing & PR' a little dated book especially in the context of the issues covered in the book about various emerging forms of media, but still is quite relevant.
Guy Kawasaki's new book Reality Check is an compilation of many of blog posts, which is slowly becoming a trend- writing books out of the posts which one has written. The book is a collection of thoughts on various issues from presentation and public speaking tips to suggestions of how to make good sales pitch to VCs. The number of issues which the author has covered can be guessed by the number of chapters the 450 plus page book has - 95...
Two more books on social media and their influence on marketing, 'Always On' a book which elaborates the turmoil which traditional media is going through after the advent of Internet based consumer generated media. Paints a scary picture of the changes which are coming up.
Second is Groundswell which is also on similar lines which discusses the concept of how customers are taking over the conversation about your company and brand through blogs , wiki and youtube. The authors are also have a very strong presence in the blogsphere through there popular blog ground swell.Both these books are on the best books list of Strategy & Business.