Big Brother 17 (U.S.)

Big Brother 17 is the seventeenth season of the American reality television series Big Brother. The season premiered on June 24, 2015, on CBS, and once again was a two-night launch with the following episode airing on June 25, 2015. The season ended on September 23, 2015, with a 90-minute season finale following the fall season premiere of Survivor: Cambodia. This season lasted 98 days, making it the longest season of the American version to date by one day. The season also featured the highest number of houseguests to date with 17 houseguests in total. On September 23, Steve Moses won the game in a 6-3 vote against Liz Nolan.

On September 24, 2014, CBS announced that it had renewed Big Brother for its seventeenth and eighteenth editions for broadcast in summer 2015 and 2016, respectively. The series would continue to be hosted by Julie Chen.

On June 15, 2015, CBS released pictures of the house via Entertainment Tonight, which has a modern steel beach house theme. The upstairs is 155 square feet larger than in previous seasons, the result of the incorporation of a glass bridge added in by Big Brother house designer Scott Storey. Season 17 is the first season for which the live feeds were bundled with CBS All Access, an over-the-top streaming service launched by CBS in January 2015 that allows users to view past and present episodes of CBS shows, and includes the live feeds and special Big Brother content.

The format has changed slightly from previous seasons. The contestants, referred to as "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.

At the start of each week, the houseguests compete in the Head of Household (HoH) competition. The winner of the HoH competition will select two houseguests to be nominated for eviction. As with the previous season, the first five weeks of the season feature two concurrent Heads of Household. Each HoH would nominate two other houseguests for eviction, totaling four nominees. The two pairs of nominees would then compete in the "Battle of the Block" competition. The winning pair would be removed from the block, with the HoH who nominated them dethroned. The dethroned HoH would later be eligible to be nominated as a replacement if the Veto was used, while the Battle of the Block winners are safe for the rest of the week. The rest of the cycle would continue as per usual, with the remaining HoH retaining immunity for the week, and the two nominees being eligible for safety through the Power of Veto. The reigning (or sole) HoH also earns the right to name the "Have Nots" for the week, forcing the chosen houseguests to eat solely "Big Brother slop" and a weekly food selection chosen by producers, take cold showers, and sleep in a bedroom designed to look like a dental clinic.

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