Mark "Jacko" Jackson, born August 30, 1959, is a former Australian rules footballer who played professionally for several teams, including St Kilda, Melbourne, Geelong and South Fremantle. After his football career he became notable for his television appearances, namely the Energizer and Nutri-Grain commercials, and several feature films.

Singing career:

Following his retirement from football, 'Jacko' used his fame and popularity to launch a singing career. His first single, I'm An Individual was a number 1 hit on the Australian singles chart. A second single, My Brain Hurts was not so successful. A 1991 release ("You Can Do This") also failed to make an impression.

Jacko combined rap-like lyrics with an amount of Australian comedy and larrikinism to bring great profits for himself.

Above text taken from Wikipedia.