That's wierd, I wrote a post about this last night - I must have forgotton to press the 'post' button. Idiot.
According to
THIS thread this idea might be copyright to a forum member!
The only way anyone would be able to last the year is if they were given lots to do, they would probably start to feel institutionalised though. If the cash prize is big then that would be an incentive. Either that or the next logical stage is the Truman Show.
I'd probably be hooked to a UK year-long BB, I can get German satellite TV channels so I could watch this but I don't speak any German.