World's Best Known Melburnian

The question was posed on morning radio who is the world's best known Melburnian. While the answer is subjective and changeable over time, a few names sprung up: Cate Blanchett - Australian actress and theatre director who has won many awards including an Academy Award. Barry Humphries - Dame Edna Everage in her lilac-coloured hair and over-the-top eyeglasses is a character played by Barry Humphries. Julian Assange - best known as the editor in chief of WikiLeaks Olivia Newton-John - singer, songwriter, and actress. Who do you think is the world's best known Melburnian?