Although Big Brother follows a basic formula from year to year, fans know to expect the unexpected when it comes to production twists. While some twists have jeopardized player's games - see season 8's "America's Player," Eric Stein - other houseguests have used the unforeseen circumstances to their advantage. Jun Song, for example, pretended to hate her ex-boyfriend Jee Choe when he entered the house as part of the "X factor" twist during season 4. In actuality, the former couple had a secret side alliance for much of the competition and Jun went on to win the grand prize.