The topless swimsuit, 3D cinema, the Sinclair C5, Cimino's movie Heaven's Gate, Rubik's Cube, Rolf Harris singing 'Two Little Boys' - movies, melodies and artefacts we would, perhaps, rather forget. But each, in its time, was the Next Big Thing. In the Eighties, Chardonnay was another Next Big Thing. But even Australian winemakers won't plant any more of this over-subscribed grape.