>> break it down for us. what exactly is lip sync battle? >> it's very simple. two celebrities perform two different songs and lip sync to the best of their ability and the audience decides who did it best. >> it's exciting and i think people just love to be somebody else for a few minutes. my husband john was on it. he's not a rapper, he was so excited to rap. he was working that m.c. hammer. >> he was working it. before, it was oscar winner john legend and now we have oscar