Director Matthew Vaughn had no need to instruct Charlie Cox and Claire Danes to "act scared" of Robert De Niro's intimidating character in new movie STARDUST - because they were genuinely terrified of the star. Vaughn urged the stars to conjure an atmosphere of terror in a scene where De Niro takes the pair hostage, and this inspired the veteran actor to click straight into Mafia mode. Cox says, "Bob's a pirate and he has us tied up. He's doing his Mafioso intimidating stuff, and Matthew's going to us: 'This is scary, this is really scary.' "But by this time we're scared of Bob for real, so there's no need to act."