Arnold Zenker Arnold Zenker Associates in Boston, which trains "people to successfully master the public spotlight." Arnold Zenker Arnold L. Zenker (born 1938) is a retired media broadcaster and public appearance counselor who gained brief stardom by sitting in for Walter Cronkite on the "CBS Evening News" in 1967. Zenker studied at the University of Pennsylvania in Philadelphia, from which he received an undergraduate and a law degree. In 1967 at the age of 28, he was asked to sit in for anchor Walter Cronkite to deliver the nightly news. Zenker, working as a Manager of News Programming at CBS at the
CBS News controversies and criticism CBS News controversies and criticism Throughout the years, numerous conservative activists have accused CBS News of perpetuating a liberal bias in its news coverage. The Media Research Center, a right-wing media watchdog group led by L. Brent Bozell, has been especially critical about what it has perceived to be unduly favorable coverage of liberal topics by CBS, especially during the tenure of "CBS Evening News" anchor Dan Rather. In his 2001 book "", former CBS correspondent Bernard Goldberg extensively criticized Rather's management of CBS News and what he claimed was Rather's combative efforts to skew the network's coverage. In 1964,