Even though you might end up watching half of this film through your fingers, Starred Up, a new prison-drama (out this Friday) starring uber-hunk Jack O'Connell, is really great. Hard core, but great. Jack is known for playing bad boys, but his performance as Eric, a super-violent young offender in prison, really takes the biscuit – no wonder Angelina Jolie picked him to be the star of her new film, Unbroken. If you're not familiar, read all about him here. And if you're not sure how much you fancy him yet, we've got five reasons why Jack's set to be your next humungo man-crush