Cornes is now a football media personality, having appeared on the
Seven Network's football coverage during the 1990s, and co hosting the
FIVEaa Sports Show with, first
K. G. Cunningham from 1995 to 2008, and then former Adelaide Crow Stephen Rowe, 2009 to April 2013. Since retirement he has hosted a conversations program, "Conversations with Cornesy", and is also back with K. G Cunningham on FIVE aa's Saturday Morning Sports Show. He has been a long-time
News Limited columnist. He has also coached the All Stars in an
E. J. Whitten Legends Game. Cornes was also the centrepiece of ''Cornesy's Allstar Rock Band'' (formerly known as the 5AA Rock-n-Roll Allstars), in which he plays guitar and does some vocals. Other members of this Adelaide-based band are Greg Mallen, Simon Wilson, David Heath, Dean Fioretti, Travis and Rob Dragani, and "Polly" Politis. In 2007, Cornes argued for the return of State of Origin in Australian football. He cited the success of the annual
New South Wales–Queensland series in the National Rugby League (NRL) and blamed the narrow-mindedness of clubs and coaches for undermining the concept in Australian football. ==Personal life==