Celebrity Assassin

For those who don't know of it, assassin is a game common to colleges and universities, where each player is given a target to 'kill' by any method available (water pistols to represent guns, plastic cutlery to represent knives etc.). Everyone is both a target and a hunter with the victor being the last person standing. (See the Wikipedia link for a better explanation).

With the popularity of celebrity shows like 'Punkd', There would likely be an audience for a hidden camera show involving celebrities playing this game.

Simply find a group of willing celebrities and pit them against each other. Suggested locations would include film sets and award ceremonies. Of course, the weapons would have to be vetted with the game organisers to ensure that they are clearly recognisable as fake to avoid problems with security teams.

Awards would be given out to the winner, as well as to the most and least creative killer, person who makes the most kills and the person who kills Paris Hilton.

As nobody would know any of the participants except for their target, this would make award ceremonies actually worth watching, as many attendees would be visibly fearful of attack at any point. I, for one, would be far more inclined to tune in to the Oscars if there was a chance I'd get to see a big water gun fight break out.