Jack Black and Ana de la Reguera inNacho Libre.Photo: Paramount/Courtesy Everett Collection

Ana de la Reguera

It’s been 15 years sinceNacho Librelaughed its way into theaters butAna de la Reguera’s memories of Jared Hess' outlandish comedy are as strong as ever.

The Mexican actress, 44, who starred as Sister Encarnación, a nun who captures the heart ofJack Black’s Catholic monk Ignacio, tells PEOPLE she “had the best experience” filming the cult classic in Oaxaca, Mexico.

“I still have it very present,” de la Reguera, who can now be seen in Netflix’sArmy of the Dead, says. “It was the most chill, cool, fun, organized production.”

“But you know what I remember the most, actually? That gives me a lot of nostalgia because it’s also been 15 years and that shows how much the world has changed.”

De la Reguera says working onNacho Librewas a liberating experience because of Black’s tendency to improvise during his scenes.

“I remember Jack would go and do his scene over and over and play with it,” she recalls, “and just make a mistake. He was just playing and trying to do different things with the scene and I remember just doing it once. At one point they were like, ‘Why do you never make mistakes?'”

Laughing, de la Reguera says she was encouraged to “go and play.”

“I love that sensation of the adrenaline of the film,” she says. “It was the atmosphere on set, it was completely different than today.”

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Nacho Libreopened in theaters on June 16, 2006. The film follows Black’s Ignacio, a Catholic monk who secretly moonlights as a luchador to earn money for the orphanage where he works at during the day as a cook. Along the way, he falls in love with a nun (de la Reguera), a new arrival at the monastery.

source: people.com