Aww... how sweet. Well, according to this website, anyway, "it can be fun and informative to observe... some exciting territorial or breeding behaviors without having to trek through the woods as many people are inclined to do."
We're thinking no, thanks. Guess we'll be hanging up some weird-looking foil in our front yard and calling an exterminator to make double-triple sure that there are no underlying insect problems. We haven't seen anything unusual, but it can't hurt to be positive. I'm sure it will cost us more than two pennies, but there you go.
I heard a woodpecker from inside the house and it sounds like a large cat or dog thunking about and upsetting furniture from inside. Nothing like what it must sound like from the outside... but I saw the woodpecker fly away when I popped outdoors to investigate. Here's what he looked like. Actually I'm suspicious that it's a SHE, but not sure. Scroll around for video and sound. :)