One of my favorite old CSI Las Vegas programs was the one where a guy died from toxic mold in his house. The mold was caused by a bullet passing through someone's flesh into the drywall, where the organic matter rotted and got moldy. And nobody knew it was there, so it grew unchecked. There was even a little animation to illustrate this point. Hard to say if this was totally fiction, but I'm guessing it was.

Here is something that really happened, from today's Las Vegas news:

"The fire was caused by a nail that had gone through a wire, which heated up the wood enough to ignite it, he said."

The garage fire caused $40,000 damage, and the couple who lived in the house both went to the hospital, and then the husband died of causes unrelated to the fire, but we haven't been told yet what they were. Could be another story for CSI.

Or at the very least, now we all know to be careful when we go around pounding nails into the walls and wherever. I thought it was relatively harmless.