Plot: In the first of two specially-extended episodes tonight to celebrate the finale of Big Brother 4, returning housemate Jon Tickle is called to the diary room, he and is fellow housemates are unaware that it's the last time he will be in the house and he is ushered outside through a camera run to be greeted by Davina and the 1,500+ audience members awaiting him. A huge stage has been constructed with flash lighting and the Big Brother's infamous 'eye' logo engraved on the stage itself