[BB4] Yes I forgot about the 'editorial slant'. It's worth watching a few of the live bits then the highlight show to find out hgow the editorialising works. The Sunday night show is particularly good for this, as they will always show an edited version of Saturday night's live task. Plus you get the pop-pscychology from Manchester Uni's most famous member of staff (and thus, I s'pose, strictly speaking one of my colleagues) which is C4's risible attempt to make the show 'respectable' rather than just admit it's just pandering to the homo sapiens' instinctive desire to peer over the garden fence (or, in times of yore, drill a hole into the next cave).
Having said that there was a piece on the radio the other day about these shows, and there was a remark which struck me - the reporter suggested that these programmes are social experiments masquerading as mass entertainment, whereas the thing that for me distinguishes British efforts in this arena is that they are exactly the opposite: there is always some affectation of worthiness, such as the Big Brother psychologist.
Of course, later tha same day I heard the chairman of the FCC ask rhetorically (and apparently without irony) if there was any other broadcast system in the world that the listener would choose to replace the US one with.