Do you remember that episode of the Simpsons in which Homer joins the Stonecutters and as a punishment for disloyalty is forced to drag a stone of shame up a hill, only to be vindicated and ordered to 'Attach the boulder of triumph!' - an even bigger stone? This absurd little episode was derived from the ancient Greek myth of Sisyphus. Mel O'Callaghan spoke with Matt Levinson about her performance work that reinvents this myth.