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.
Kyle Sandilands
On 14 July 2008, two weeks before the season finale, Sandilands appeared on the 2007 Australian season of "Big Brother". In an attempt to boost poor ratings and to promote the 2007 season of "Australian Idol", Sandilands entered the Gold Coast compound and was due to conduct his radio program in house on that Monday morning. However, after a heated verbal exchange with Big Brother, Sandilands reportedly required anti-nausea injections for migraines and began vomiting every 30 minutes. He left the house soon after. In 2008, Sandilands and Henderson became the hosts of the 2008 season of "Big Brother" replacing Gretel Killeen. The ratings for the launch of the 2008 series were the lowest in the show's history, and Network Ten ultimately confirmed that it would not continue past the current season.