Video: Big Brother most memorable moments as it marks its 25th anniversary | Daily Mail Online

It has been 25 years since the first series of Big Brother hit TV screens in 2000, captivating the British public and becoming an instant classic. Deemed TV's 'first social experiment', the concept of contestants being locked in a house together and surveilled 24 hours a day was at that time a baffling one. Famous for its controversial and sometimes scandalous moments, Big Brother was responsible for some of the wildest scenes to ever grace British TV screens - including a Pamela Anderson cameo