DAVID Hill has had his fair share of tough jobs, from boss of the ABC to chairman of Soccer Australia and trying to get the trains to run on time as chief executive of the old NSW State Rail Authority. His latest venture? He's been installed as president of a 15-nation organisation trying to convince the British Government to surrender the Elgin Marbles, now in the British Museum, to their rightful Greek owners, who plan to put them on display in the refurbished Acropolis Museum in Athens. Strewth would never suggest Hill has lost his marbles, just that he seems to have a penchant for Sisyphean tasks. Sisyphus was the legendary Greek king who was sentenced to endlessly roll a huge boulder to the top of a mountain in Hades, only to have it roll down again.