The movie: The Insider
Weight gained: 50(ish)lbs
No one can seem to agree on how many pounds Crowe acquired for this 1999 Michael Mann thriller. The Washington Post says it was just 30, while Empire claims an insane 80. By Crowe's estimation, it sounds more like 50, and he hit that tally by going on a "medically controlled" diet of bourbon and cheeseburgers and basically not moving a ton. This honed technique came in handy nine years later, when he gained another gut for Body of Lies.
The quote: "Having Gladiator coming up was the best thing I could do, because I probably forced the issue, didn't I? I probably could have waddled around in the alleyway for years, going, 'Excuse me, do you want to hire a fat guy?'" -- Crowe to E! Online