Gieco ads are so annoying I've figured it was intentional. Same with Aflac. Ditto for anything from Capital One credit cards.
Countrywide mortgage is just lame.
I agree the amount of commercials is getting much worse. It's even worse on network TV than on cable now. I was trying to watch "National Treasure" on NBC the other day. I swear, every 5-10 minutes there was a commercial break.
I must say, however that the 80s commercials were even worse, in my opinion. They used to try to bring a jingle into every commercial. With an extremely lame sounding chorus of singers. Some of those insidious jingles remain in my head to this day. "shower to shower each day..."
At least some time in the 90s they switched to try and make commercials funny.