Career
He was in 2000 the country"s only Professor of Multi-Camera Production, and has taught at Lillehammer University College. He has been with the Norwegian Broadcasting Corporation since 1964. Andreassen has produced television programmes including Den store klassefesten, LørDan and Lørdagsredaksjonen.
As well as television productions, he also produced the opening ceremonies for the Lillehammer Olympics, the FIS Nordic World Ski Championships 1997 in Trondheim, the opening of Gardermoen in 1998, Eurovision Song Contest in 1986 and the Millennium Show at Rådhusplassen in Oslo.