Remember last year when we reported Shia LaBeouf had dropped acid for 24 hours to prepare for a role in The Necessary Death of Charlie Countryman? At the time, the 26-year-old told USA Today that he wanted to deliver a realistic rendering of a scene in which he character trips on LSD. "There's a way to do an acid trip like Harold & Kumar, and there's a way to be on acid," he said. "What I know of acting, Sean Penn actually strapped up to that (electric) chair in Dead Man Walking. These are the guys that I look up to," he said.

Well, the movie - which tells the story of a young man who heads to Romania after the death of his mother - premiered at the Sundance Film Festival this week. MTV News caught up with the actor to clear up the acid story, asking, "The character drops acid and you did that for the role. You did it because you wanted to be in that headspace, apparently?" LaBeouf appeared to go into detail about the process of preparing for a scene with the use of drugs, "I'd never done acid before. I remember sending Evan tapes. I remember trying to conjure this and sending tapes. And Evan being like 'That's good, but that's not but, that is," adding, "You reach out to friends and gauge where you're at. I was sending tapes around and I'd get 50 percents from people and that just starts creeping me out. I was getting really nervous toward the end. Not cause I wanted to be on drugs - I'm not trying to mess with the set or anything like that. It's really just fear that propels people."

LaBeouf was also reported to have drunk real moonshine to prepare for the gangster drama Lawless and was expected to film real sex scene for Lars Von Trier's Nymphomaniac before the idea was scrapped. Following its Sundance screening, The Necessary Death of Charlie Countryman courted positive reviews, with The Hollywood Reporter saying, "LaBeouf projects a degree of emotional recklessness that's both disarming and disconcerting to watch." 

Watch Shia LaBeouf and Sundance founder Robert Redford At The Premiere of The Company You Keep: