see your missing the bigger picture. The only reason we watched this commercial is because of the rap at the end getting peoples attention. If he didnt rap at the end this commercial would of been forgotten the day it aired.. now we're talking about it on a forum...
If you talking about the forums, nobody is talking about or even caring about the product at hand. What is the product at hand? Exactly...... You can sell the product and do your role. As a consumer looking at this, if im watching at home, he has failed because of the ending. Raps can work in situations but it is when its done, where and how its done thats going to determine it.