For me, it would have to be when Australian Geoffrey Rush won the Best Actor Award for Shine in 1996.
Geoffrey was neither young or handsome in the way many leading actors are. In fact he was a struggling stage actor.
And of course, like the best of Cinderella stories, the Oscar changed everything for him.
As of November 2009, he is one of 22 people to have won the "Triple Crown of Acting": an Academy Award, a Tony Award, and an Emmy Award, and has also won the Golden Globe, the BAFTA, the Screen Actors Guild, and the Australian Film Institute awards
Over the years we have had many Australians nominated and many who have won - Nicole, Mel, Cate, Russell, Heath, Peter Finch. We have even had those who have tried to pass themselves off as Australians. I was just reading this site which has some interesting Oscar facts and learnt that Merle Oberon who was nominated for an Oscar in 1935 said she was Australian. However it turned out that this was what the studio and Oberon herself perpetuated to hide the fact that she was born in Bombay (now Mumbai), India, to unmarried parents (an Anglo-Sri Lankan mother and an unknown father).
So what about you, do you have a favourite Oscar moment?