Funnyman Jonah Hill has perfected the art of looking drunk in a movie - he downs a bottle of vodka before the cameras roll.
The actor plays an alcohol-loving teenager in 2007 comedy Superbad, and he made sure his portrayal was realistic by boozing before his scenes.
And the tactic worked so well, he used it again for his role in new movie Get Him to the Greek.
Hill tells Britain's FHM, "I hate watching films where someone's supposed to be drunk and you can tell that they're not. In Superbad I was really concerned about the scene where I had to kiss Emma Stone and end up headbutting her. I wanted it to feel real, so I got a bottle of vodka and just starting hammering it.
"For Get Him to the Greek, I'd just get really drunk and videotape myself, then I had references to how many shots I'd had and how drunk I was."