I quite enjoyed the first two or three series of big brother when the housemates were all relatively normal people. since then the 'contestants' have all been hell-bent on getting themselves a bit of fame and hopefully milking it for as much as possible afterwards and the producers have continually tried to find the most bizzare and weird people to stick in there which in my opinion has totally ruined the show. The end of this series, and therefore the end of the show completely, can't come soon enough for me.
I've had an idea for a Big Brother Finale though - get all the past housemates together, stick 'em all in one big house, seal up the doors permanently and then turn off all the cameras and just leave them in there forever.