For Armageddon, Ben Affleck had to get $20,000 worth of dental work done because director Michael Bay thought he had “baby teeth.” The actor had to spend eight hours a day in the dentist’s chair for a solid week.

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Julia beat out actors like Florence Pugh, Alexa Demie, and Emma Laird for the part.

However, Universal Pictures reportedly scrapped the biopic after Madonna announced her upcoming world tour. 

On the Armageddon DVD commentary, Michael said, "Jerry [Bruckheimer, the producer] used a very famous star in a plane movie that he replaced teeth with, so he said, 'We did it to him, why not do it to Ben?' So my dentist had Ben sitting in a dentist's chair for a week, eight hours a day."

She told BUILD Series, "[Villanelle] loves life, and I think she loves her food ... but yeah, I felt a little bit sick when I left that audition."

She told the Chicago Tribune, "And it worked. I thought, Either I'm gonna be totally laughed at or they're gonna love it. One or the other. And I have no inhibitions at this moment and put it out there. And I walked in and I think there was a little shock at first and a little bit like, 'Oh god, no.' And then Michael London said, 'Oh, thank god. At least we have one costume out of the way.' It put me at ease. I was like, 'Awww. You love it. OK.'"

On The Late Show With Stephen Colbert, she said, "I ended up booking the part, and it wasn't really until much later in production that he realized I was not British. ... I think my mom's Southern accent kind of gave the whole 'horse breeding' [thing] away."

However, when Idris came in for his fourth audition, he felt the need to come clean.

On Hot Ones, he said, "My parents told me not to lie — you gotta look someone in the eye and be honest."

Brian told Backstage, "Long story short, [David] was able to help me get a friend of his who owns an airport, and who strangely also happens to be a semiprofessional photographer, to take a little bit of his day and do a makeshift photo shoot of me standing next to a plane in a fighter pilot costume so I could just show them. 'Look, if you're having a hard time envisioning what I would look like, let me show you.' And it worked!"

Geena told Allison Kugel, "Then, when [Ridley] decided he was going to direct it, he immediately said, 'Yes. Okay, sure, I'll meet with her,' and I convinced him somehow or another."

She told CNBC Make It, "I got so lucky with that audition, and I got to have an amazing cast to work [with], and I got to learn how to act from Ted Danson — and Mike Schur is the greatest boss of all time."

She told Out, "But I was given a horse on set without being told it was a verbal-command horse, so I couldn't figure out how to make it ride. And I went to a rehearsal in front of 300 extras, all of whom work in rodeos, and the horse wouldn't do a damn thing I wanted it to. And at the end it threw me — in front of everyone."

Paul told Entertainment Weekly, "My agent was like, 'We are not losing this job over you not being able to drive, so I'll tell production that you can, and in the meantime, you go off and rattle through as many lessons as you can.'"

She told Harper's Bazaar, "The room just went dead silent and I froze. I'm thinking, You just hit Leonardo DiCaprio in the face. They're going to arrest you because that's assault. You're definitely never going to work again, that's for sure. They'll probably sue you as well in case there's a bruise on his face and he needs to film something else. And then all of a sudden, [director Martin Scorsese] and Leo just burst out laughing. Marty says, 'That was great!' Leo's like, 'Hit me again!'"