In the movie 'The International' a character gets part of his ear shot off. This reminded me of another film in which a main character lost part of his ear. I can't remember the film, though. Which one was it?

In the movie "Chopper", Mark (Chopper) Read asked a buddy to hack his ears off to get transferred out of a dangerous division in prison. Is that the one?

https://en.wikipedia.org/wiki/Chopper_(film)

In "Lust For Life" Vincent Van Gogh is shown cutting off his ear, true story.

http://www.imdb.com/title/tt0049456/

"My first encounter with a disgusting ear scene was in Alan Parker's Midnight Express where Billy Hayes bites off some guy's ear in a prison yard fight."
Here is the line-up on the ten grossest ear scenes -- Videos are included:

(10) Blue Velvet- Ear Ants! While walking home from the local hospital Kyle MacLachlan finds a severed human ear lying in a nearby field.
(9) Heartbreak Ridge- Sudden Earring Removal!
(8) Wild Wild West- Public Ear Cleaning!
(7) The Big Lebowski- Ear Bite and Spit! The true grandson scene to the for mentioned Midnight Express ear bite scene.
(6) The Fly- Ear Falls Off! Just after Seth Brundle finishes soaking his donuts in three gallons of fly vomit, he reaches up to scratch his ear - which promptly "pops" off his head.
(5) Star Trek: The Wrath of Khan- Ear Crawlies!
(4) Scary Movie- Ear Glory Hole!
(3) Chopper- Conscious Ear Removal!
(2) Dead Alive- Ear Pudding!
(1) Reservoir Dogs- Ear Torture!

examiner.com/x-488-Movie-Examiner~y2008m10d30-The-10-grossest-ear-scenes-in-film no longer exists

I don't think it was any of these. However, I think I remember it being a chunk out of the top part of the ear and I also think I remember a joke being made about in one of the following scenes.

Fight Club: She also designed an extra to have a chunk missing from his ear, for which she cited Mike Tyson's bite as inspiration.

https://en.wikipedia.org/wiki/Fight_Club_(film)