In Frank's class today, we graded commercials based on the method and effectiveness that the message was delivered. There was so many different ways to look at these commercials and so many different interpretations.

Sometimes if humor comes into play, that will be the only thing the observer will remember and the desired message won't register. There is also the argument that commercials lacking humor are boring, especially with the outrageous campaigns that are currently in play. An example of this is Old Spice's current campaign. The brand wouldn't be half as popular as it is now if it weren't for that brilliant concept.
However, if the commercial is a complete failure and lacks relevant components, or the message just isn't delivered effectively, then it was just a big waste of time and money- mostly a waste of money.
So the next time you watch a commercial, test it's effectiveness by seeing how much you retain once it has come and gone. You may be surprised by how little or how much got through.