The book was good. It was an interesting story and interesting read. Except for the same basic intro concept, the movie wasn't as good as the book. The plot line even was slightly different. I'd definitely recommend the book as a summer read (you still have a few weeks before Labor Day).
Overview from Barnes and Noble's website:
Nick Hornby mines the hearts and psyches of four lost souls who connect just when they’ve reached the end of the line.
In four distinct and riveting first-person voices, Hornby tells a story of four individuals confronting the limits of choice, circumstance, and their own mortality. This is a tale of connections made and missed, punishing regrets, and the grace of second chances.