FULL METAL JACKET (1987)
Legendary filmmaker Stanley Kubrick originally hired former Vietnam War drill instructor R. Lee Ermey as a technical adviser for his 1987 Vietnam War film, Full Metal Jacket. However, after Ermey pleaded with Kubrick to let him audition for the role of the film’s insane drill instructor, Hartman, even going so far as to film a 15-minute audition tape of him hurling insults at a group of Royal Marines while being pelted by fruit, he won the role. Kubrick later said Ermey came up with approximately 150 pages of insults and improvised about 50 percent of his dialogue—including most of the insults he screamed at his onscreen cadets. Rumor has it that Ermey was so convincing in the role, he even barked an off-camera order at Kubrick to stand up when he was spoken to, and the normally controlling Kubrick instinctively obliged.