The head of a Washington, DC based media watchdog group is asking that advertisers demand to preview a planned CBS mini series on former President Ronald Reagan before sponsoring the program. Media Reasearch Center President L. Brent Bozell Tuesday sent a letter to each of the nations top 100 advertisers urging them to preview the movie before making a sponsorship decision because it is what Bozell called 'a partisan attack against one of Americas most beloved Presidents.'A review of the script by New York Times writer Jim Reutenberg noted the two part mini series, scheduled for later this month, makes...