The head of a Washington, D.C. - 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 Research Center President L. Brent Bozell Tuesday sent a letter to each of the nation's top 100 advertisers, urging them to preview the movie before making a sponsorship decision because it is what Bozell called a "partisan political attack against one of America's most beloved presidents." A review of the script by New York Times reporter Jim Rutenberg noted the two-part mini-series, scheduled for broadcast next month, makes...