Whatever amount of money Duracell paid Jay-Z to "partner" with them on their new Powermat (a pretty-sweet looking wireless charging system), can it really add much to that giant bucket of money he already has? (It's "half a billie," right?) Is it worth the potential harm to his image to appear in something as gauche as a TV commercial? Well, as the commercial—released today—proves, Jay-Z can look cool doing pretty much anything. The same can't be said for Lil Wayne's Mountain Dew endorsement, which just sounds silly. (For the record, neither of them care what I think.)