Who won Australian Idol when Jessica Mauboy was runner up?

Australian Idol is a television show that was broadcast in Australia from 2003 to 2009. The show was a reality competition that searched for the country's next pop star. On the fourth season of Australian Idol in 2006, Damien Leith was crowned the winner, with Jessica Mauboy as the runner-up.

Damien Leith is a singer and songwriter from New South Wales, Australia. After winning Australian Idol, he released his first album, "The Winner's Journey", which was a collection of songs he performed on the show. The album debuted at number one on the Australian charts and went on to earn Platinum certification. Leith has since released several more albums and has established himself as a successful musician in Australia.

Jessica Mauboy is an Indigenous Australian singer and actress who rose to fame as a runner-up on Australian Idol. Since her appearance on the show, Mauboy has had a successful career in the music industry, releasing several hit albums and singles. She is also a sought-after performer and has appeared in several films and television shows. Mauboy is considered one of Australia's most successful female artists and is known for her powerful vocals and inspiring performances.