The ground rules for the programme seem to be that most people will never have heard of any of the "celebrities" involved, apart from a couple of dodgy characters who are trying to make some mind of come back after some disastrous episode that has scuppered their career, or propelled them into the headlines. The passing bits I've seen of the programme while channel surfing look quite extraordinarily boring.

I prefer Shambles suggestion involving an imaginary collection of people whom it would actually be interesting to see interacting, in a huis clos situation.

Shambles and Joe Offer would make a good start...