Marks steps up. The Nine Entertainment Co confirmed this morning that CEO David Gyngell is stepping down immediately and will be replaced by board member and former Nine executive, Hugh Marks. Gyngell will remain a director of Nine Entertainment. Gyngell has been CEO of Nine since 2007 -- his second go at the top job after he quit in 2005 in protest at interference and second-guessing by James Packer and John Alexander, who was then a key adviser to Packer (and is now a non-executive director of Seven West Media and executive deputy chair of Crown Resorts). -- Glenn Dyer

Riley on the couch. Before the year is out, Insiders will host a commercial TV journalist as part of its panel, as Channel Seven's political correspondent Mark Riley agrees to join the panellists on the second-to-last episode of the year.