Stephen Hawking - "A Brief History Of Time"

James Gleick - "CHAOS"

Paul Davies - "About Time: Einstein's Unfinished Revolution"

R Dawkins , is great , I have read many of his books.. The Greatest.Show on Earth is perhaps the best in laying down
the specific evidence for Evolution.. I definitely like this one..

Hitchens' God is Not Great  is more to do with undermining both theism and the belief in the supernatural... rather than extolling the
virtues of  Evolution itself. but it is a fantastic read..

I also like this  book

Extinction: Evolution and the End of Man by Michael C. Boulter

It describes  evolution in action, indirectly through , continental drift, volcanism, the effect that the Eocence epoch had on speeding up the cycle
of extinction and replenishment from the surviving species.. It does concentrate on man.. but the point is made quite well in the book
about vulnerabilities of species..
Apparently man is not as immune to these forces as one would think...

Other books

It is also worth noting that other books not specifically designed to explain or confirm 
Darwins theory  are worth reading. They contain irrefutable evidence that
natural selection is going on, even though they don't set out to prove it !.

Evolution: What the Fossils Say and Why It Matters by Donald Prothero.  Dr. Prothero is a working paleontologist, the book has some great picture sequences of fossils that are only found in the basement of museums and university labs.  If I remember correctly, his specialty is hoofed mammals in the western hemisphere.

Science on Trial: The Case for Evolution by Douglas J. Futuyma.  Been awhile since I read it, but my recollection is that he manages to demolish every tired creationist argument.

Tower of Babel: The Evidence against the New Creationism by Robert T. Pennock.  Devastating if you are a young earth creationist.  Dr. Pennock's degree is history and the philosophy of science.  He was raised a Quaker.

Anything by Michael Shermer.   I found his books on why people believe the things they do to be particularly fascinating. 

Anything by Carl Sagan.  Especially The Demon Haunted World: Science as a Candle in the Dark.  This gave rise to the saying around our house, "ah, it's the invisible dragon again".  You'll see when you read it.

And while there are a number of other scientists who do not agree with all of his theories, I like Stephen J. Gould's essay collections.  Short, written for the educated layman, and often with just a twist of laughter.

As you can probably tell, I prefer the "science lite" popularized versions.  I have enough problems trying to keep up with the IT world for my real career.  I just don't have the time to learn enough of all of the different disciplines involved to be able to read more specific tomes with anything approaching true comprehension.

And before you break the bank, you might consider interlibrary loan.  Most libraries allow you to get copies from other libraries either for free or a small fee if your local library does not have a copy.  And they will even mail it directly to the address you provide.  I like to read first and then buy if I find the book to be particularly re-readable.

Thanks for all the suggestions. I will never be without something good to read now.

So, I guess no one has heard of Jan Sapp, The Evolution of Biology or sees a need to comment. I am about a chapter in now and find it a good read. It is enriching my understand of the history of how evolution was discovered and a who's who of the key players.

Really am enjoyed this website.

Got it today in a bookstore. The book includes all of his works. When I read his quotes they seem hard to get into. Maybe the context will help.

Thanks.