What famous person or people could be a star on the reality show?

That list would be way too long for this forum! The ones you mentioned are a good start. Some I would add to the list are most of the people who have already been on reality shows. Just a sampling of some others would include: Miley Cyrus, Lady GaGa, Paris Hilton, Perez Hilton, George Clooney, Johnny Depp, Sean Penn, Donald Trump, most politicians and actors, and any hypocritical, over-inflated egomaniacs who like to tell others how to live.