TV Big Brother Big Brother 5/10 by 250 users American version of the reality game show which follows a group of HouseGuests living together 24 hours a day in the "Big Brother" house, isolated from the outside world but under constant surveillance with no privacy for three months. Details Casts Posters Images Title Big Brother Alternative Titles Big Brother USA, Big Brother US, Big Brother: Unlocked Subtitle Available ETC. First Air Date 2000-07-05 Last Air Date 2025-07-30 Number of Episodes 969 Number of Seasons 27 Genres Reality, Networks CBS, Casts Julie Chen, Clayton Halsey Plot Keywords , Self - Host Julie Chen Announcer (voice) Clayton Halsey