Anyone who's seen The Sopranos will know just how fickle the criminal underworld can be - and just how quickly someone can get whacked if they cross the wrong person.

Of course, starring in a show about a group of violent, heartless mobsters must be the ultimate occupational hazard for actors, who could easily find themselves killed off quicker than they can say 'Tony Soprano'... all because their character looked at Silvio Dante the wrong way.