One of cable television's foremost left-wing anchors/commentators, Keith Olbermann attained a broad fan base and viewership for his witty news reportage and pointed analyses of current affairs (especially politics). Throughout, Olbermann's admirers consistently praised his willingness to aggressively take on right-wing media factions, politicians, and pundits -- a quality that gave him a markedly broad liberal fan base. Though best known for his lengthy tenure at MSNBC (as host of the nightly talk program Countdown with Keith Olbermann), Olbermann actually began his career in broadcast journalism as a CNN correspondent and a sports reporter on the ABC Radio Network, but became best known as one of the mainstays of ESPN SportsCenter in the early to mid-'90s (usually opposite Dan Patrick). Following his departure from ESPN, Olbermann moved to NBC in late 1997, where he did double duty, juggling responsibilities as a sports anchor (hosting the World Series, the Super Bowl, and the MLB All-Star Game), and a commentator on two MSNBC programs, White House in Crisis and The Big Show. Olbermann and MSNBC launched Countdown in 2003; when NBC began airing Sunday Night Football several years later, Olbermann appeared as one of the anchors.