Vacuums are perhaps the only product only the planet that you can say that it sucks and it be a good thing. If a vacuum doesn't suck, it's a bad thing. Why for have advertisers not picked up on this yet?
Sample TV/Radio Commercial:
Scene: Man and wife in the housewares department
Wife: Honey, which vacuum should we buy?
Salesperson: Well, the [brand x] vacuum really sucks.
Wife: Why would I want to buy a vacuum that sucks?
Salesperson: Isn't that what you want it to do?
Husband: Good point.
Fade to product info screen.