On November 24, 1993, the epic comedy-drama featuring the great Williams was released in the United States for the first time.

To commemorate the film’s forthcoming 30th anniversary, Mrs. Doubtfire director Chris Columbus reminisced on his experiences working with Williams.

Columbus added that Williams established early on in the shoot that he would be improvising a lot.

“He went to me and said, ‘Hey boss, the way I like to work if you’re up for it, is I’ll give you three or four scripted takes, and then let’s play,'” the director told Business Insider.

“What he meant by that was that he wanted to improvise.” Every scene was shot in this manner.

“We would have exactly what was scripted, and then Robin would go off, and it was something to behold.”

Columbus bemoans the “poor script supervisor,” who had to “handwrite” what Williams said since the actor changed it “every take.”

“So Robin went somewhere where he couldn’t remember much of what he said. “We’d go to the script supervisor and ask her, and sometimes she didn’t understand it all,” Columbus adds. “Often, he would literally give us a completely different take than what we did doing the written takes.”

On “several occasions,” Williams improvised so much that the camera’s film would run out, forcing Columbus to “shoot the entire movie with four cameras to keep up with him.”

He goes on to explain: “None of us knew what he was going to say when he got going, and so I wanted a camera on the other actors to get their reactions.”

“For Pierce Brosnan and Sally Field, it was quite difficult for them not to break character.”

They eventually shot ‘nearly two million feet of film’ for the picture.

And the filmmaker doesn’t ‘think’ the studio saw everything, which implies there might be videos of Williams that has never been seen before.

As a result of Williams’ nonstop improvisation, Columbus has been left with ‘approximately 972 cartons of video’ from the film.

The boxes contain video from the film as well as ‘outtakes and behind-the-scenes material’ and are kept ‘in a warehouse someplace’.

The filmmaker also has ambitions for the film reels, intending to employ an editor to sift through all of the footage and maybe develop a documentary about the creation of Mrs. Doubtfire.

“We want to show Robin’s process,” Columbus decides. There’s something remarkable and wonderful about how he went about his business that I believe would be interesting to investigate.

“I mean, there’s two million feet of film in that warehouse, so there could be something we can do with all of that.”

So, any editors out there willing to help?