On a friend's LJ recently, a discussion broke out over how people love folding laundry. Weirdoes, I know. However, as I just did a bout of cleaning all the mirrors in the house, it occurred to me that that was my equivalent. I *love* cleaning mirrors. Don't know why. So, I presume that universally, everyone has one cleaning fetish. Thusly...

What's your favorite cleaning/housework chore, and why?