If you haven't seen Wolf of Wall Street yet, here's a synopsis: Leonardo di Caprio gets mightily rich, and equally wasted. So how did the 39-year-old actor prepare for the role? He's quite wealthy himself (with an estimated net worth around $200m), but what about all that drinking and snorting...
Di Caprio told the LA Times that he had "never done" drugs - despite a well-earned reputation for hedonism during the early flush of his post Titanic fame.
Instead of personal experience, he turned to YouTube for pointers. And there he found this video - The Drunkest Man Alive - which is nothing if not educational.