The frequency of commercials directly affects my family's willingness to purchase a product. Given that statement, if I never hear Sheryl Crow singing "every day is a winding road" about cars or see "Dr. Z" in an ad ever again, it will be too soon. They have gone far beyond making favorable imprints in our minds; in fact, they've incited disgust for the associated products. We watch TV on a "limited basis" and even so, these two commercials have worn themselves out several weeks ago.
Every time I see the beginning of the toenail medication commercial with that gross yellow talking thing, I change the channel as fast as I can. I can't even tell you what the product name is - only that it is the most disgusting commercial I have ever seen. Seems to me that advertising is supposed to prompt consumers to remember a product and to buy it....not to make them nauseous.