Super Bowl advertisers spent $3.8 million per 30-second spot to pitch their brands to more than 100 million viewers. They employed celebrities — Kate Upton, Amy Poehler, Tracy Morgan, Psy — along with familiar talking babies, partying geriatrics and Clydesdales. Which ads were most effective? Description: A young man is off to the prom, solo. His dad throws him the keys to the Audi S6, empowering him enough to kiss the prom queen. His resulting black eye is “worth it.” From the panel: Greg Wagner, lecturer, Department of Marketing, Daniels College of Business: “Laughed out loud at the teen’s primal scream as he drives home victorious. YouTube viewers got to vote, selecting one of three endings prior to the final cut. They picked the right one.”