A cardboard Wayne Gretzky stars in an epic battle of wills as one woman goes to extreme measures to make sure her husband’s prized life-size cutout of the hockey legend doesn’t follow them to their new home. The spot, by San Francisco agency Venables Bell & Partners, is the first for the agency’s new client Mobile Mini, a provider of portable storage solutions, and chronicles the husband-and-wife battle as they pack their household possessions in a storage container. It’s just the beginning of a fully integrated marketing effort as the company expands nationally.