The "Greatest Show on Earth" is back and badly in need of an image makeover.

The last Olympic Games of the 20th century could revitalize the event or plunge it further into discredit with its arrival in one of the world's most youthful, energetic, reckless and inexperienced of international cities.

Sydney won the right to host the Games of the XXVII Olympiad in 1993 on the promise that Australia would deliver a fresh face to the Olympic movement, clean up corruption and drugs, and put on a "Green Games."