Maybe I just watch too much TV, but think that in the past couple of months, TV pitchman Billy Mays has crossed the line into overexposure. On some cable channels, especially on the weekend, you can see Mays endorsing what seem to be a dozen different products, all with his same loud and enthusiastic delivery. I still think of him as the “Oxi-Clean” guy, although he’s always done more than one product. But now he’s hawking so many different products at the same time that to me, it’s become annoying.