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.
Big Brother 7 (U.S. season)
Big Brother 7, also known as Big Brother: All-Stars, was the seventh season of the American reality television series "Big Brother". It is based upon the Netherlands series of the same name, which gained notoriety in 1999 and 2000. The series premiered on CBS on July 6, 2006, and lasted eleven weeks until the live finale on September 12, 2006. The seventh season saw a moderate increase in ratings, though they generally remained the same when compared to previous editions. The season premiered to a total of 7.69 million viewers, the lowest premiere numbers for any season at the time. The season finale had a total of 8.14 million viewers, making it the lowest rated finale at the time. In total, the series averaged 7.56 million viewers. "Big Brother: All-Stars" featured a total of 14 HouseGuests, the same number that was featured in the previous season. The majority of the cast was selected by viewers, though producers did select some HouseGuests; it is composed entirely of HouseGuests from the first six seasons. The series ended after 72 days, in which HouseGuest Mike "Boogie" Malin was crowned the Winner, and Erika Landin the Runner-Up.