The Chris Rock slap at the Oscars, left, and Daniel Craig's virus-hit Broadway production, have both been attributed to the 'Macbeth curse'. Centre: Laurence Olivier as the treacherous general in 1937. AFP, Getty Images
The Chris Rock slap at the Oscars, left, and Daniel Craig's virus-hit Broadway production, have both been attributed to the 'Macbeth curse'. Centre: Laurence Olivier as the treacherous general in 1937Show more

What is the curse of 'Macbeth' and did Chris Rock get slapped after uttering it?