Your comment on bad ads being the ones often seen during football games seems right to me. It's hard to remember...it's been so long since I watched football, sweet, sweet football...when you're a Packer fan, every summer is a long, dry summer. But I digress. Just remember the PTC is rating the shows, not the ads; if they were rating the ads at least half of the bad ten list would be beer companies, and the rest of the list would be whoever makes Cialis, Viagra and that other drug in the same class (Levitra?) plus the folks who make the Enzyte ads about enhancing the size of your schmecke. I looked at the PTC's ratings page and they don't rate sports, probably because they're live events.
Despite the occasional smutty ad (and the Cialis ads that make me cringe--"If those old people do it in that bathtub they'll break a hip!") my kids watch the Packers with me every week.
As a Cowboys fan, I've enjoyed the preseason so far. I wish the Packers well.
The toenail fungus commercial, IMO, is the worst ever made. The most skipped I bet is Bowflex, because once you've seen it, you really don't need it every fifteen minutes on every channel for the rest of your life.