Big Brother

Big Brother is an American reality television program, based on the Dutch version created by John de Mol. It first aired on July 5, 2000 on CBS. Julie Chen has hosted the series from its inception.

The premise of the show is that contestants - called HouseGuests - enter the house and compete to be the winner. They have no communication with anyone outside of the house. The last HouseGuest left standing is declared the winner of Big Brother.

Format
Each week, one HouseGuest wins a competition naming them the Head of Household. It is their job to nominated two fellow HouseGuests for eviction. The others in the house when then vote to eliminate one of the two nominated. In the first season, those two automatically faced the vote; in subsequent seasons another challenge was added. The Power of Veto challenge allows one person to win the veto and save somebody from eviction, if they chose to use the power. The Head of Household would then have to nominated a replacement to face the final vote.

Starting in season sixteen, two people win Head of Household and nominated two HouseGuests for eviction. Another challenge, the Battle of the Block, allowed one pair of nominees to remove themselves from the nominations and remove the Head of Household who nominated them from their power. The week would proceed as normal after this point.

In the end, the final two HouseGuests face a jury of those previously evicted to decide the winner of Big Brother.