Bad Commercials, Good Design?

It seems to me that the most annoying thing about any radio or TV programming is the commercials. Most the time I just change the channel or turn the radio off when they start but when I do listen or watch the only ones I ever remember for long time are the ones that are just terrible. Its great when a funny or intelligent commercial comes along but they don't stick like the really bad ones. It makes me wonder if a terrible commercial with a ridiculous jingle is a more successful design for an advertisement than a brilliant idea or hilarious punch-line. More often than not its local commercials who obviously don't have a huge budget for advertising so they throw something together using what little resources they have and voila we're blessed with a terrible commercial that makes you want to turn the TV off and ask the people wtf they were thinking? But that stupid commercial was so bad or so annoying that you just won't forget it, not for months probably. I use the General car insurance image as an example because of they're awful jingle and cheap 3D graphics they use in their commercials. Both of these are so bad that the General I think will forever be stuck in my head.

 We know advertising works otherwise companies wouldn't spend millions on it, so I wonder how effective a commercial is that is just so terrible you can't forget it.