Al Sharpton's newest role - full-time anchorman - is now a reality. The New York City-based black activist, preacher and former presidential candidate launched his MSNBC-TV talk show, "PoliticsNation," on Monday, August 29, six days after the network tapped him for the 6-7 P.M. (EST) weeknight slot vacated in July by Cenk Uygur. The announcement wasn't unexpected. Sharpton frequently had substituted for Uygur. And MSNBC's parent company, Comcast Corp., for years has been a generous donor to Sharpton's nonprofit group, National Action Network (NAN). The elevation of Sharpton, with a long history of demagoguery and financial chicanery, to top-tier media player, for now, is complete. The question is whether "the Rev" is more than a novelty - and whether his hiring represents another case of corporate surrender to a larger political culture.