Most of the cast and crew on David Ayer's Suicide Squad (2016) got inked with the tattoo "SKWAD" in honour of the film
Following the tremendous success of the Lord of the Rings trilogy, the New Zealand government actually created the position of Minister for Lord Of The Rings, whose responsibility was to exploit all economic opportunities the films created. Cabinet Minister Pete Hodgson received this appointment.
The "Bat credit card" that Batman, portrayed by George Clooney, pulls out in Joel Schumacher's Batman & Robin(1997) is, apparently, "good" until forever...
Steven Spielberg finally finished college in 2002 after a 33 year haitus, turning in Schindler's List(1993) for his student film requirement.
Before Princess Mononoke(1997) made its North American run through translation and distribution by Miramax Films, Harvey Weinstein requested permission from director Hayao Miyazaki to edit it so as to make it more marketable. Miyazaki sent him a katana along with a simple message: "No cuts".
In Park Chan-wook's 2003 South Korean revenge film Oldboy(2003), actor Choi Min-sik ended up eating four live octopuses for the restaurant scene before they were satisfied with what they got. The actor, a Buddhist, had to go pray in atonement.
According to "Quentin Tarantino's Universe", the character of Lt. Aldo Raine, the leader of the Inglorious Basterds from Inglorious Basterds(2009), is in fact the great grandfather of Floyd, the 'pothead on the couch', from True Romance(1993), both of whom were portrayed by Brad Pitt.
During the filming of Steven Spielberg's Schindler's List(1993), when real-life Survivor Mila Pfefferberg met Ralph Fiennes on set for the first time, she started shaking uncontrollably because he reminded her too much of the real Amon Goeth.
For Alejandro Gonzalez Inarritu's Birdman(2014), the scene where Riggan(played by Michael Keaton) runs through Times Square in nothing but his underwear was filmed after midnight in order to limit the number of real bystanders in the scene. Most of the crowd seen in the actual film were in fact hired extras and crew members.
As was similarly done for Zack Snyder's Man Of Steel(2013), Christopher Nolan and his team grew their own cornfield for the farm scenes in Interstellar(2014), selling off the corn thereafter when filming was done for a decent profit.