Finger nails are for digging and getting into nooks and crannies, and to a lesser extent defense. I assume toe nails were for the same back when we were monkeys and had usable feet. If so, why haven't they been bred out by evolution?
Batman - The Dark Knight - 4 1/2 Stars Awesome movie. All of the acting was good, and I'm so glad they replaced Katie Holmes. However, I really hate Christian Bale's "Batman voice." ( spoiler alert )