Big Brother (Australian season 7)
Big Brother Australia 2007, also known as Big Brother 7, was the seventh season of the Australian reality television series "Big Brother". Episodes were broadcast on Network Ten in Australia, and the first episode aired on 22 April 2007. 
Despite a drop in ratings compared to previous series, and a number of controversies, the then "Big Brother" executive producer Kris Noble considers the year's series a success. At the end of this season's finale broadcast 30 July 2007, it was announced by host Gretel Killeen that "Big Brother" would be returning for an eighth season in 2008. In the finale Aleisha Cowcher was announced winner of "Big Brother Australia 2007". She won by the closest winning margin ever in the Australian series. The news the following day reported a margin of 51% versus 49% – a difference of 65 votes. This was the last season hosted by Gretel Killeen.
Natalie Gauci
Gauci and Matt Corby were the two contestants on the show's grand finale. At the conclusion of each series, a "Winner's Single" is released. The 2007 winner's single, "Here I Am", was written by Lindy Robbins and Tom Leonard, who had previously written for the Backstreet Boys. Both Corby and Gauci were critical of the track, with Gauci professing confusion as the demo version had male vocals – she adapted it to be consistent with her jazz music style. While Corby felt it was "not something I'd choose to release ... Yes, I'm being diplomatic. Even though this competition has made me look like I'm into pop, I'm really not". On 25 November 2007, Gauci was declared the winner of "Australian Idol 2007". She became the first contestant to progress to the top 12 through a judges' lifeline and then win the competition.