Tony Hale says it was 'very surreal' watching Nicole Kidman play Lucille Ball

• Hale said it was an "awesome" experience watching costar Kidman transform into Lucille Ball.
• Both Hale and Kidman star in Aaron Sorkin's upcoming film "Being the Ricardos."
• Kidman has said the biggest challenge playing Ball is the legend's "way of speaking."

Nicole Kidman told Chris Rock in a recent Variety "Actors on Actors" interview that she's way out of her "comfort zone" playing Lucille Ball in Aaron Sorkin's upcoming movie, "Being the Ricardos."

But according to Tony Hale, who plays "I Love Lucy" producer and head writer Jess Oppenheimer in the movie, it's hard to notice her having any difficulty playing the iconic comedian.

"I have a front row seat," Hale told Insider recently about working with Kidman on the movie. "It was awesome."

In the movie. Kidman plays Ball at the height of the comedian's fame, when she starred opposite her real-life husband, Desi Arnaz (played by Javier Bardem), in the classic sitcom "I Love Lucy" in the 1950s.

"I'm excited for people to be as impressed as I was in how she is in this," Hale said of Kidman's performance. "There were so many days where I was standing in that world and looking at Javier and Nicole and it was just very surreal. They did a fantastic job."

However, Kidman told Rock she's "free-falling" trying to play the TV legend.

"I've had to put in an enormous amount of time on Lucille Ball right now, because she has a very particular way of speaking," the Australian actress said of the upstate New York-born Ball.

There's also the fact that, as Kidman pointed out to Rock, she's "never cast funny."

The Oscar and Emmy winner did point out that Sorkin's film is not so much focused on the funny antics Ball did on the show as what was going on behind the scenes.

"Everyone thinks we're remaking the 'I Love Lucy' show, and it's so not that," Kidman said. "It's about Lucy and Desi and their relationship and their marriage. It's very deep, actually."

Ball was one of the most famous TV stars in the 1950s thanks to "I Love Lucy," in which she plays a New York housewife with dreams of being a big star and is married to a bandleader (Arnaz). She was also a trailblazer in the industry at the time, as she was one of the few women to have a production company.

"Being the Ricardos" is currently in production and will be released by Amazon Studios.