Penn & Teller: Fool Us is hosted by Jonathan Ross. The show offers aspiring magicians from across the United Kingdom the chance to perform their most mystifying trick to fool Penn & Teller. The dou know nothing about he magican about to perform or what trick they are going to perform. They sit in the audience watching every move that is made and if any are able to fool the professionals they arewarded with a five star trip to Las Vegas to perform as the opening act in Penn & Teller's world famous show at the Rio Hotel & Casino.