They are all fake - it's a game show and people go into the house to win 100k and get their 15 minutes of fame and a magazine deal - end of story really!
Both Kat and Rachel have done some kind of TV/Film work already. Darnell desperatley wants a record contract, Rex wants to be the next Gordon Ramsey, his gf wants to just be anyone apart from Rex's gf, Mikey wants to be know as the first blind person to win BB, Lisa (although I love her) will do anything to get on TV etc - the only ones I am not too sure about are Sara and Mo - I think they just both want the money!
