Reviewed by GREG KING Director: Neil Burger Stars: Bradley Cooper, Robert De Niro, Abbie Cornish, Andrew Howard. Limitless is a twisted morality tale about greed, hubris and wish fulfilment. Eddie Morra (Bradley Cooper, from The Hangover, etc) is an aspiring writer suffering from writer’s block. But when his drug dealing ex-brother-in-law introduces him to a new wonder drug known as NZT his life …