Blast Films / IFC Films
Character: Bobby Sands, a volunteer of the Provisional Irish Republican Army who led a hunger strike in 1981 to protest the British government's removal of inmates' political statuses.
Weight change: Fassbender continued losing weight throughout the film shoot, ending at 127 pounds.
Method: The actor stuck to a diet of berries, nuts and sardines, talking long walks and doing yoga to slim down.
There's more: Fassbender said he talked to family before accepting the role — even attempting a two-week fast to see what it was like.