When the arguments get too big and the directors and authors need to smooth things out.
Getting along with other people at work is not always easy for all of us.
But now imagine how difficult it gets when it comes to famous people.
These on-set altercations have made life a little more difficult for everyone who has been forced to adapt to the endless drama of the feuding stars.
1. Gillian Anderson and David Duchovny ("The X-Files")
The X-Files scriptwriters had to make sure that Gillian Anderson and David Duchovny would spend time apart after all the time together. The reason? The stars started driving each other crazy because they were constantly squatting on top of each other.
2. Julia Roberts and Nick Nolte ("I Love Trouble")

In a New York Times interview with the two leads of "I Love Trouble," Kilmer said, "The stars started getting mad at each other it became clear how much the two actor:s hate each other’s guts. Roberts has called Nolte "completely disgusting" and said that he "does everything he can to repel people"."
Nolte responded, "It’s not nice to call someone ‘disgusting’. But she is not a nice person either. Everyone knows that."
3. Will Smith and Janet Hubert ("The Prince of Bel-Air")

Janet Hubert felt tortured at times on the set of "The Fresh Prince of Bel-Air". She struggled to get along with Will Smith, who became more and more famous, which also grew his ego. The situation became so unbearable for everyone that the writer:s tried to cut Janet’s role, after which she left the show, forcing a recast. The two recently reconciled after not speaking for 27 years.
4. Rose McGowan and Alyssa Milano ("Charmed")

Rose McGowan’s character was added to "Charmed" later to fill a void left by the departure of Shannen Doherty. Rumor has it that Doherty left because of a fight with Alyssa Milano. McGowan therefore picked up right where Doherty left off. Although McGowan and Milano have both managed to work together, McGowan accused Milano of making the set "toxic" at the time in a Twitter exchange in 2020.
5. Val Kilmer and Tom Sizemore ("Red Planet")
Tom Sizemore and Val Kilmer are two actors who are known to be good at acting, but have not-so-good attitudes. On the set of "Red Planet" the two finally got into an ego conflict. Sizemore demanded that a fancy piece of exercise equipment be delivered to the set. Kilmer then scolded the actor as well as addressed the difference in the fee they had received for the film.
In another incident, Sizemore also threw a weight at Kilmer and the two started arguing, calling him "everything". After that, everyone on set decided it would be better if they shot their scenes separately.
6. Teri Hatcher and the entire cast of "Desperate Housewives."

Teri Hatcher wanted to be the star of a series with four leading ladies, which was bound to cause problems. During a Vanity Fair shoot in 2005, Hatcher pissed off her co-stars by insisting on being in the middle of the group photo and having first choice of wardrobe. ABC tried to intervene in favor of the other women, but Hatcher hadn’t let up until she got what she wanted.
7. Freddie Prinze Jr. and Kiefer Sutherland ("24")

Freddie Prinze Jr. has claimed that the atmosphere on the set of "24" became so miserable because of Kiefer Sutherland that he was thinking about giving up acting for good.
"I was on ’24’. It was horrible. I hated every moment of it," Prinze told ABC News. "Pine was the most unprofessional guy in the world. That’s not blasphemy, I would say it to his face. I think everyone who worked with him said that."
8. Chad Michael Murray and Sophia Bush (One Tree Hill)

Sophia Bush tried to keep things professional after she and Chad Michael Murray broke up. Mainly because they had on-and-off love affairs in One Tree Hill.
Instead of respecting that, Bush has claimed that the producer:s have brought up past events to drive up ratings. They also would have poked around in her personal life behind the scenes, which she called "opportunistic and ugly".
9. Naya Rivera and Lea Michele (Glee)

While Rachel Berry and Santana Lopez went from enemies to friends on screen, the opposite was true for the actresses themselves.
"Over the course of the series, however, that friendship has begun to fracture. Especially when Santana went from a background character to one with bigger storylines and more screen time," Rivera revealed in her memoir. She went on to write that she and Michele were in the whole 6. Season have not spoken a word to each other.
10. America Ferrera and Lindsay Lohan ("All Betty!")

Lindsay Lohan was supposed to have a bigger role in the series "Ugly Betty," but she was fired because of her differences with America Ferrera. Not only did the two not get along particularly well, but Lohan was known to trash her dressing room and leave cut-out tabloid photos of herself on set.
11. Taylor Momsen and the team of "Gossip Girl"

As Taylor Momsen grew up, she realized she was more interested in music than acting. This wouldn’t have been a big deal if she wasn’t in the middle of playing Jenny Humphrey on Gossip Girl. She arrived late to the set, forgot her lines and made sure other actor:s had to fill in for her. This eventually led to her being written out of the series.
12. Archie Panjabi and Julianna Margulies ("The Good Wife")

The fans of "The Good Wife" knew that something was wrong between the actresses Archie Panjabi and Julianna Margulies when a strange trend appeared: after the middle of the fourth season, the two actress:ins did not have a single scene together.
In some scenes where they had to be together, they were filmed separately and later edited together. There are many theories and few facts about the reason for the dispute. But when you consider that in 2015 they couldn’t even shoot their last scene together, it’s safe to say that the conflict must have made for an uncomfortable work environment.
13. Chevy Chase and Dan Harmon (Community)

Chevy Chase didn’t feel like shooting his final scenes for the show’s third season. That prompted Dan Harmon to direct a "f*ck you" chant at Chase at the wrap party in front of his family and along with the show’s cast and crew. He retaliated by leaving Harmon a rude voicemail. This is what Harmon then played on his podcast. Harmon left the series for the fourth season then, but came back for seasons 5 and 6 and supposedly got along with Chase.
14. Nathan Fillion and Stana Katic (Castle)

Stana Katic and Nathan Fillion may have been married on screen, but off screen the two didn’t get along. According to reports, Fillion was always pretty nasty towards Katic. When things really came to a head, show executives sent the two to couples counseling to work out their differences. Katic eventually decided to leave the show and a month later ABC canceled the series renewal.
15. Vin Diesel and Dwayne Johnson ("The Fast and the Furious")

Rumor has it that Dwayne Johnson’s busy schedule caused delays on the set of "Fast& Furious 8" have led, which has frustrated his co-stars. Vin Diesel, in particular, seems to have taken exception to this and publicly argued with Johnson about it. Johnson did not return to the franchise as a result and, by his own admission, has no plans to do so
16. Emma Kenney and Emmy Rossum ("Shameless")
Emmy Rossum’s exit from "Shameless" was a big deal for viewers:inside, but the Gallagher family won’t exactly miss her. In the last two seasons, rumors circulated that Rossum’s behavior on set was a little too much for everyone else to handle. Emma Kinney has said Rossum’s departure has made the set a "more positive place".
17. Wesley Snipes and the cast of Blade: Trinity

The set of "Blade: Trinity" was an awkward place for the cast and crew, with a disinterested Wesley Snipes doing only what was necessary. Other characters had to take over his dialogue, as at times he refused to speak at all and only shot close-ups. After an argument with the director, he then only communicated with him via post-it notes.
18. Thomas Gibson and the "Criminal Minds" writers

Thomas Gibson was one of the biggest stars of Criminal Minds, which is why fans were shocked by his abrupt exit. Gibson directed an episode and then got into a fight with one of the writers over creative differences. In the heat of the moment, Gibson kicked the writer and was initially suspended for two episodes. However, the situation then escalated and Gibson was fired. His character, Aaron Hotchner, was dropped from the series.