NEW YORK (AdAge.com) -- As part of the World Trade Group's third annual "Future TV Show" conference, Turner Broadcasting's research chief slammed the present-day accuracy of Forrester Research data reports. Speaking on a panel about the future of audience measurement, Jack Wakshlag said a Forrester report about the coming impact of DVRs on the televison business "caused huge damage." He also had some choice words about the methods currently being used to analyze Nielsen audience data.