With Made In Chelsea's Spencer facing allegations of drug use and the TOWIE gang being asked to buck up their ideas, it's clearer than ever that reality TV contestants can occasionally be as difficult to work with as children or animals.
Over the years some have let fame go to their heads, others were notorious hell-raisers before the cameras started to roll. Then there are the rogues who tried to cheat their way to winning, and those who just really managed to get under the skin of an audience.
So in all their glory here are reality TV's naughtiest boys and girls, as well as a few who just drove viewers crazy.
PHOTOS: Reality TV's Baddest Boys, Girls and Villains