Billy Mays doesn't have an "inside voice". I find commercials that shout very annoying.

I refuse to buy a product which I have not seen in person. Quite often, they turn out to be very shoddy. Petsmart sells the nail grinders; they had them on clearance because no one was buying them. The Sham Wows look useful, but again I'm turned off by Billy Mays.

Hmm...I wonder how often that affects one's buying a product or service...poor presentation. I guess that's why Madison Avenue ad folks get the big bux.