I did see part of that piece on Stonehenge, and then I think my wife jingled some keys nearby or pulled a string across the floor and then she had my undivided attention. I saw a NGC piece on the Ark recently that talked about how it had capacitor like qualities. Naturally, they're all about pointing to a perfectly scientific explanation for God.

I checked out the Wikipedia articles on Baghdad Battery. It was good, but it seems like it's hard to say whether they stored scrolls with the pots or if they used them to produce electricity. It seems like it may have produce such a small amount that it's hard to imagine this being the answer. The other thing that I am skeptical of is this: if they did discover electrical properties, why aren't there larger objects to produce more electricity? Ancient people knew how to build very large things, and a ruler would certainly have been told of this kind of discovery.