Great book and a very fun read. I think Stephenson co-wrote this book before Snow Crash. For sure before the horrendously long Cryptonomicon and it's sequels.
The story follows US Governor William Cozzano, who suffers a stroke just before he runs for President. A loose consortium of financial interests called "The Network" come together with the aid of a biotechnologist and a spin doctor to embed a biochip in Cozzano's head to recover from the stroke. This it does, but it also allows the Network to control and manipulate Cozzano into becoming the perfect candidate, and one that will work in the Network's best interests.
Very good read.
http://www.amazon.com/Interface-Neal-Stephenson/dp/0553383434
