My television has been acting up lately. It's sporadic — wavy lines come and go at their leisure, for no apparent reason. They do tend to crop up at inconvenient times — during a key play in a basketball game or right as somebody is about to confess on Law & Order. And sure, when I'm playing Wii, the little tennis players run off the side of the screen, causing me to miss my shot. But is it time to get a new one? Though it is old and far from a fancy, high-definition flat screen, my television still works.