I liked Futuyma's "Science on Trial," and another excellent entry-level (enough for my entry, let it be said) book is Philip Kitcher's "Abusing Science." It's allegedly out of print, but I had no trouble finding it at the library. That's where we used to get books before there was Amazon, you young 'uns.
The Strahler book is a mind-bogglingly comprehensive reference work containing all the down-and-dirty science details, and works well as a doorstop too.
My personal favorite book that deals directly with the Creationist debate is Robert Pennock's amazing "Tower of Babel." Pennock is a philosopher of science at the U. of Michigan who concentrates on the philosophical issues concerning methodological naturalism and what can and can't be considered science. He shines a mercilessly harsh light on Intelligent Design, and anyone who's read Pennock's anti-ID articles online understands what quick work his philosophical scalpel can make of the already wormy corpse of the Argument from Design.
Pennock takes his time, and "Tower" might be rough going for anyone just interested in a quickie fundie-refutation manual. If you're past that stage, it's an astounding mental workout.