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.
List of Big Brother (Australian TV series) season 7 housemates
Michelle Olsen is a retailer from Western Australia. She describes herself as loud, outspoken and honest. She entered the house on Day 50 as an Intruder, alongside Zach during the Double Eviction / Double Intruder special. She was involved in an allegedly abusive two-hour long argument with Aleisha, which led to her being named 2007's "most hated housemate" and a bogan. The odds given for her eviction on 8 July (Day 78) were the lowest ever for any reality television event worldwide, being placed at A$1.01. She is the fourteenth housemate to be evicted, on Day 78, by public voting with 73% of the merged vote, and a series record of 92% of the total evict vote which she received the name of the most percentage of votes ever recorded. Before Michelle's landslide eviction, Jo from series 3 held the record with 86% of the total evict vote. After Michelle's eviction she was shown on television hugging then Prime Minister John Howard. She now is a Zumba teacher.