Career
Notable performances include the musical "Olsenbanden Junior. - At Circus" at the Oslo Nye Teater, and appearances in entertainment programs on television, including a regular role in the long-running television drama series Hotel Cæsar, and appearances on the musical variety show Beat for Beat, which airs weekly on the national television channel NRK1. As a stand-up comedian he is best known as "the man with the megaphone" and for "Hønefosskålen".
Rønning and Bror Andersen set up an annual summer revue in Hønefoss.
In October to December 2007 he performed his show "Et Fønny Sjow" at Victoria Nasjonal Jazzscene with Morten Grøtnes. In December 2012, Rønning and Grøtnes performed the Christmas show "Julelatter 2012" ("Christmas Laughter 2012").