It might seem a little thing, but it's something that's been bugging me since we bought the house. The bookcases just never seemed finished. The proportion was off with the top just ending the way it did. But they look RIGHT to me now. I still have to caulk a bit because absolutely nothing is square or even in our home, (and, of course, do all the painting that this allowed me to put off a bit longer!) but I have to tell you, just adding this bit of trim to the tops of the bookcases has made me feel like a new woman. Really! Doesn't take much to make this Mama happy.