Farrell also had a successful career as a media commentator. He wrote articles for "The Irish Press" and the "Irish Independent". During the 1950s he worked with Radio Éireann and in 1962 he joined the newly established Irish television station, Telefís Éireann. He presented RTÉ's main programmed of comment and analysis - "Broadsheet", "Newsbeat", "7 Days", "The Politics Programme", "Frontline", "Today Tonight", "Farrell" and "Prime Time" - into the new millennium. He also continued to work on radio from time to time until his retirement in 2004.