Matt Damon reveals Christopher Nolan's unusual method of delivering the 'Interstellar' script

Matt Damon has shared a behind-the-scenes story about Christopher Nolan's famously secretive filmmaking process, revealing that the director once sent a production assistant to Germany to hand-deliver the script for Interstellar.

Speaking in a recent interview, Damon recalled that he was filming The Monuments Men with George Clooney in rural Germany when he received word that Nolan had a role for him in an upcoming film.

When Damon asked to read the script, he expected it to be sent electronically or by mail. Instead, a production assistant arrived in Germany carrying a physical copy.

"They sent a guy, a PA, to Germany hand-carrying the script because they wouldn't send it in the mail," Damon said.

The actor explained that the assistant arrived around 9pm, but Damon had an early morning shoot and couldn't read the script until the following evening. Because of the strict security measures, the assistant wasn't allowed to leave the script behind.

"He goes, 'I can't leave the script,'" Damon recalled. "I said, 'I'm going to be home at 6pm tomorrow night. I'll sit down immediately and read the script then.'"

According to Damon, the unexpected delay turned into an adventure for the production assistant, who had never traveled outside the United States before.

"He had the best day," Damon said. "He went around rural Germany."

When Damon finally got the chance to read the script the next day, it left a lasting impression.

"My kids were little. I was away from my kids that week because I was in Germany, and I was a puddle reading that script," he said. "I've never reacted to a script that way."

Damon ultimately joined Interstellar in the surprise role of Dr. Mann, one of the film's biggest twists.