Liukkonen's biggest career moments were Pertti Karppinen's Olympic gold medal in rowing at the Montreal 1976, Moscow 1980 and in Los Angeles 1984 Olympics. In Los Angeles he was also the commentator for Jouko Salomäki's gold medal victory in Greco-Roman wrestling. For Winter sports Liukkonen commentated Matti Nykänen's first World Champion victory in large hill in Oslo 1982 and Marjo Matikainen's Olympic gold medal victory in women's 5 km skiing in Calgary 1988. At the Barcelona 1992 games he was the commentator when Mikko Kolehmainen won the gold medal in K-1 500 metres kayaking. After his retirement Liukkonen made a comeback and commentated curling in the Olympics. The biggest moment of his curling commentating career was the Olympic silver medal won by Markku Uusipaavalniemi's team in Torino 2006.