The Greatest Show On Earth
Even with the Catholic church accepting evolution since the 1950's, but as one of god's greatest works. It's staggering that the issue is still to be put to bed. Richard Dawkins' "Greatest Show on Earth" is one of my favourite books, it arms the reader with overwhelming arguments to back up evolution as fact. It's beautifully written and every example is easily understood, whether scientifically minded or not. I highly recommend it.
As Dawkins says at the beginning of the book, no person with an open mind reading it will finish it still thinking evolution is anything other than beyond all reasonable doubt. In fact beyond all doubt.