Darn it Woman! moment:
A couple days ago we received a notice from the electric company telling us that our electricity usage is about 40% higher than the next highest person in our "neighborhood" and suggesting ways to minimize our usage. I've always thought our bill was kind of high but I've only made the occasional grumpy old man - "turn off the lights" - comment a couple times. My wife told me we've gotten those notices before, but she just throws it away.
So I started paying attention now that I'm home all day. At one point the other day, in the midst of a bright and sunny day, my wife had lights on in every room in our house with the exception of my Booze Cellar. So now I retrace her steps a couple times a day and shut off the lights behind her.