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John Stamos -

In October 2023, John Stamos appeared on 'The Howard Stern Show' to promote his new memoir, 'If You Would Have Told Me.' He revealed that his alcoholism got so bad around 2015 that he doesn't remember being on set to film 'My Big Fat Greek Wedding 2.'

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John Stamos -

The actor even forgot he booked a part in the movie. He was reminded the day after his 2015 DUI arrest that he had to go to Toronto to film.

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Brie Larson -

Brie Larson won an Academy Award for her performance in 'Room'(2015), but there's one emotionally wrenching scene she has no memory of filming.

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Brie Larson -

She told The Denver Post that while she was filming the scene where she reunites with her son, "I slipped and fell on the ice, and then, when I went to dive into the police car, I guess I hit my head."

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Michael J. Fox -

Best known for playing Marty McFly in 'Back to the Future' (1985), Michael J. Fox has hardly any memory of filming the legendary movie.

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Michael J. Fox -

In an appearance on 'Live with Kelly and Michael,' Fox explained that the memory loss was probably because he was filming the movie at night, while also filming the series 'Family Ties' during the day. He must have been incredibly sleep-deprived.

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Sarah Hyland -

Best known for playing Haley Dunphy on 'Modern Family,' Sarah Hyland has opened up about how her health challenges impacted her experience working on the show.

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Sarah Hyland -

Hyland, who has a chronic kidney condition called kidney dysplasia, has had two kidney transplants. Because of this, she doesn't remember filming some of 'Modern Family.' On the podcast 'Quitters,' she explained that she was "exhausted" and "dead asleep" while preparing for her first kidney transplant, while working on the show.

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Colin Farrell -

The Irish actor revealed that he has no memories of making 'Miami Vice' (2006). It was the last film he made while still using drugs and alcohol.

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Colin Farrell -

"The second (the movie) was finished, I was put on a plane and sent to rehab as everyone else was going to the wrap party," he said.

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Frankie Muniz -

Frankie Muniz started playing Malcolm on 'Malcolm in the Middle' at the age of 15, and wrapped it up at 20. However, he remembers almost nothing of filming the popular sitcom. On top of that, he doesn't even remember being nominated for an Emmy in 2001, or even attending the ceremony.

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Frankie Muniz -

Having first spoken on the matter while appearing on 'Dancing with the Stars' in 2017, Muniz believes his amnesia is the cause of a series of nine concussions he suffered. The first occurred while he was playing soccer at the age of seven. Also, he has had at least 15 transient ischemic attacks (TIAs), commonly known as mini-strokes, which could be related.

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Courteney Cox -

The actress behind Monica Geller struggles to remember much of the filming of 'Friends.' She simply blames having a bad memory.

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Courteney Cox -

She told Jimmy Kimmel, "I remember obviously loving everybody there and having fun, and I remember certain times in my life that I was there, but I don't remember episodes."

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Matthew Perry -

Matthew Perry also revealed that he has a hard time remembering parts of filming 'Friends.' But in his case, it's because he was dealing with addiction issues at the time.

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Matthew Perry -

"I ​don't remember three years of it," Perry said in a BBC radio interview. "I was a little out of it at the time. Somewhere between seasons three and six."

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Lisa Kudrow -

In 2022, while appearing on 'Watch What Happens Live with Andy Cohen,' Lisa Kudrow admitted she also didn't remember much about filming 'Friends.'

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Lisa Kudrow -

Just like Cox, Kudrow said that she's "completely in the same boat" and that she also has a "bad memory" when it comes to the show.

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John Boyega -

John Boyega won the 2020 Golden Globe for Best Supporting Actor for his role in the series 'Small Axe.' However, there's a key scene he doesn't remember filming.

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John Boyega -

In the scene, his character discovers racist graffiti on his police locker. Boyega told the Radio Times, "I don't remember filming that scene. I just remember fuming and being angry."

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Malcolm McDowell -

The British actor, who famously starred in the cult classic 'A Clockwork Orange' (1971), told The Guardian he has no memory of doing most of his films.

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Malcolm McDowell -

This could partly be due to the fact that McDowell has acted in nearly 300 movies. On filming 'A Clockwork Orange,' he called the production "overbearing" and said that director Stanley Kubrick was too "brutal" and "controlling" to bond with.

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Raven-Symoné -

Between the ages of four to six, Raven-Symoné played Olivia on 'The Cosby Show.' However, she has no memories of filming the show, which she's trying to figure out why in therapy.

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Raven-Symoné -

In an interview on the show 'Uncensored,' she said: "I don't remember a scene. I don't remember anything while it's a rehearsal or a camera... I do not remember as soon as the cameras start. Something clicks off, and I do what I'm trained to do."

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Avan Jogia -

Avan Jogia, who played Beck Oliver on Nickelodeon's 'Victorious,' revealed on TikTok that he doesn't remember filming the show.

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Avan Jogia -

However, he does remember going out with his castmates after filming, and said that part of his poor memory had to do with him being hungover.

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Ethan Embry -

Ethan Embry was so stoned while filming 'Can't Hardly Wait' that he doesn't remember anything about the movie.

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Ethan Embry -

During a 2013 interview with VH1, Embry said, "At the time, when we were shooting that, I was the world's biggest stoner. I remember the director came up to me and asked if I was 'altered.' But other than that, nothing sticks out because I was so stoned the entire time."

Sources: (People) (Harper's Bazaar) (Variety)(BuzzFeed) 

See also: Stars you didn't realize may never act again

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