The Ancestor's Tale by Richard Dawkins. 2004, ISBN 0-618-00583-8.
This is a fantastic book. I loved reading it. (The entry on wikipedia contains a lot of information about the book.) Highly recommended for those interested in learning something about how various living things are related. Since this is a non-fiction science book, information contained in it will change a bit as new discoveries are made, still much of the information is well establish, so this book should be a good introduction to evolution for the layman for many years to come.
Purchased new from the PSU bookstore on 2-23-2005 for $28.

Genome by Matt Ridley. 1999, ISBN 0-06093290-2. Subtitle: The Autobiography of a Species in 23 Chapters. This is a popular science book. It is about the human genome, the genes that produce humans. Those genes are stored in 23 pairs of chromosomes, hence the 23 chapters. The author discusses one gene for each chromosomes and in doing so covers a wide range of topics. Purchased 8-12-2002 at Borders for $14.00. This is the second time I have read this book.

The Journey of Man: A Genetic Odyssey by Spencer Wells. 2002, ISBN 0-691-11532-X. This book is a history of the human race as told by the genetic information sampled from various people around the world. The author describes how he and many other scientists have discovered the migrations of human populations since man started to leave Africa around 50,000 years ago. The book is mostly non-technical in the way it explains the ideas covered. The book explains some basic ideas about how genetics works and how it is involved in the evolution of man. There is a TV series with the same title. Purchased 1-26-2003, from Amazon.com for $20.97.