Big Brother 8 (American season)

Big Brother 8 was the eighth season of the American reality television series Big Brother. The series premiered on CBS on July 5, 2007 and lasted eleven weeks until the live finale on September 18, 2007. Big Brother 8 featured 14 HouseGuests, the same amount that was featured in the previous season.

Format
The format remains largely unchanged from previous seasons. HouseGuests are sequestered in the Big Brother House with no contact to or from the outside world. Each week, the HouseGuests take part in several compulsory challenges that determine who will win food, luxuries, and power in the House. The winner of the weekly Head of Household competition is immune from nominations and must nominate two fellow HouseGuests for eviction. After a HouseGuest becomes Head of Household, he or she is ineligible to take part in the next Head of Household competition. HouseGuests also take part in competitions to earn food for the week. The losing team will be forced to eat Big Brother Slop for the week. This is the second season to feature Slop as the punishment food, as it was originally peanut butter and jelly. The winner of the Power of Veto competition wins the right to save one of the nominated HouseGuests from eviction. If the Veto winner exercises the power, the Head of Household must then nominate another HouseGuest for eviction.

On eviction night, all HouseGuests except for the Head of Household and the two nominees vote to evict one of the two nominees. This compulsory vote is conducted in the privacy of the Diary Room by the host Julie Chen. In the event of a tie, the Head of Household must cast the deciding vote, announcing it in front of the other HouseGuests. Unlike other versions of Big Brother, the HouseGuests may discuss the nomination and eviction process openly and freely. The nominee with the greater number of votes will be evicted from the House on the live Thursday broadcast, exiting to an adjacent studio to be interviewed by Chen. HouseGuests may voluntarily leave the House at any time and those who break the rules may be expelled from the house by Big Brother. The final seven HouseGuests evicted during the season will vote for the winner on the season finale. These "Jury Members" will be sequestered in a separate house and will not be allowed to watch the show except for competitions and ceremonies that include all of the remaining HouseGuests. The jury members will not be shown any Diary Room interviews or any footage that include strategy or details regarding nominations.

This season featured numerous changes to the twist of the series. The main twists this season saw three sets of enemies entering the house together. This twist did not impact the main format, however, and HouseGuests were free to work with or against each other. Another twist this season saw one HouseGuest being "America's Player", and this HouseGuest was required to perform tasks for America. This allowed the viewers to also choose who this HouseGuest should target for eviction, as well as evict the HouseGuest of their choice. For the first Head of Household competition the three rival unknown rival players were unable to compete, and were thus immune from the first eviction. This season also saw a Double Eviction week occur, making it the second season to feature this twist.