#5: Charlie Sheen Stayed Awake for Days to Prepare for Ferris Bueller’s Day Off (1986)
Charlie Sheen played a drugged-out teenager in Ferris Bueller’s Day Off before his real-life addiction issues began. To make himself look exhausted for the role, he later claimed he stayed awake for 48 straight hours. The film became one of the defining teen comedies of the 1980s and remains widely quoted today.
