One of the most popular classes at Google's internal university is Search Inside Yourself, and I just finished reading its "textbook," Search Inside Yourself: The Unexpected Path to Achieving Success, Happiness (and World Peace) by Chade-Meng Tan. Though I haven't taken the class (really long waiting list), I feel like I got a pretty good glimpse into how useful and interesting it would be.
Many articles recently have described Google's foray into mindfulness training for employees, citing its stress reduction qualities and the benefits it products in increased emotional intelligence and workplace efficacy. It's neat to see how such an old practice can have such practical use.
I found this book's discussions of meditation and attention training techniques really detailed and useful, much more so than the sections on emotional intelligence (and especially the sections on world peace). Those seemed to trivialize a lot of the issues and skim at a very high level some really difficult techniques (each of which is covered in multiple full-length books). But I appreciated the introduction that the book provided for these areas and the connection to mindfulness that it made.
I still think that Mindfulness in Plain English is a better introduction to meditation specifically, but Search Inside Yourself does a lot more in linking it to the corporate world and everyday applications.