R. Lee Ermey had been an actual US Marine drill instructor. He was originally hired as a consultant, but was so good they put him in the movie. Another example of life imitating art imitating life 
R Lee Ermey was a drill sergeant before becoming an actor, so this is likely art imitating life. He did write some of his own dialogue.
Kubrick didn’t just pull Ermey out of obscurity and put him in a film, though. He did have a few acting roles before Full Metal Jacket.
So the version of this I’ve heard is that it was specifically talking to police that Godfather and the later Scorsese movies changed forever. Prior to those movies IRL gangsters didn’t have a “gangster” way of speaking to the police, but the cops who worked on organized crime noticed a change after these films where gangsters who were arrested or interviewed would suddenly start talking like the characters in those films even though they hadn’t before.
His first role was basically the prototype for his character in FMJ - Sgt. Loyce in “The Boys In Company C.”
Including The Boys in Company C where he was a marine drill instructor.
Edit: silenus, drop and give me fifty!
silenus ninja’d you; shouldn’t you be the one doing pushups? 
WHO SAID THAT? WHO JUST SIGNED HIS OWN DEATH WARRANT?
I was! Thanks.
I always thought it was neat that Anahiem’s hockey team is named The Mighty Ducks after the movie. But it wouldn’t surprise me to find out the team is owned by Disney.
Supposedly the idea of RL police shouting “Freeze” comes from TV/ movie dramas.
I heard that some police actually draw lines around dead bodies like in the movies. Although, as you can guess forensic techs hate the practice.
“Dale” was first used as a person’s name by writer Walter Scott.
And supposedly NASA got the idea for the rocket countdown from a 1929 Fritz Lang movie called “Woman in the Moon”:
But they sold in 2005 to Henry and Susan Samueli, who currently own the team.
When that song was ubiquitous on FM rock radio, many stations obtained that number for their Request Line.
According to Dave Wilton’s awesome site WordOrigins.org, it was Daffy Duck who called Elmer Fudd a nimrod, which was already an insult, albeit slightly different. Check out his article on how this word has evolved several times.
I read somewhere (a link from here) that there were more new Klingon speakers than new Navajo speakers.
I could certainly believe that. Navajos are born; morons are made.
Wish I said that. I will say that some day when the occasion arises.
I often say the key to being witty is not to be quick; it’s to have a good memory. The situation will arise again, and then you can pull that prefab zinger out of your back pocket.
Now where did you get that zinger? The day after you stood there tongue-tied but suddenly had inspiration later while reviewing the conversation and kicking yourself. Ask me know I know this. OTOH, please don’t.
I have experienced it many times.
The names “Oscar” and “Malvina” became popular after James MacPherson released his translations of the “Ossian” poem cycle in the 1760s. Except he didn’t translate them – he made them up. I’m not sure if those names eveb existed before he published, but hje’s certainly responsible for their popularity.
And my Grandmother was named “Malvina”!