It’s no secret that Hollywood actors are high-strung. They spend their time on set and around each other for hours, days, and sometimes even months at a time. Sometimes, they just cannot get along. Here is a list of ten of the most devastating Hollywood actor’s fights.

1) Megan Fox and Michael Bay

The Transformers star has had multiple fights with director Michael Bay over the years. She claims that he constantly makes her look fat and stupid on screen. He claims that she is difficult to work with and abuses drugs.

2) Christian Bale and Terrence Howard

While filming Terminator Salvation in 2008, Howard claimed that Bale threatened him after one of his rants was caught on tape. Bale says this story is completely false and that he was only trying to tell Howard to shut up so that he could save the rant for another take.

3) Maggie Smith and Derek Jacobi

These two have been friends for forty years, but apparently Maggie Smith does not like Jacobi’s wife! Jacobi said himself in an interview with The Telegraph, “Maggie doesn’t get on with her [Jacobi’s wife] at all, which is unfortunate because we were very good friends until she came

Morgan Freeman vs. Michael Caine in “Now You See Me”

Norman Reedus vs. Michael Rooker in “The Walking Dead”

Ian McKellen vs. Viggo Mortensen in “The Lord of the Rings: The Fellowship of the Ring”

Ryan Reynolds vs. Ben Kingsley in “Iron Man 3”

Andy Whitfield vs. Lucy Lawless in “Spartacus: Gods of the Arena”

Jennifer Garner vs. James Van Der Beek in “Alias”

Daniel Craig vs. Mads Mikkelsen in “Casino Royale”

Robert Downey Jr., Chris Evans, Mark Ruffalo, Chris Hemsworth, Scarlett Johansson and Jeremy Renner vs. Tom Hiddleston in “The Avengers”

From the Hollywood Reporter:

1. Kirk Douglas vs. Edward G. Robinson (The Bad and the Beautiful, 1952)

2. Martin Ritt vs. Paul Newman (Hud, 1963)

3. Michael Cimino vs. Everyone (Heaven’s Gate, 1980)

4. Robert Altman vs. Lily Tomlin (Nashville, 1975)

5. Tom Cruise vs. Dustin Hoffman (Rain Man, 1988)

6. Orson Welles vs. Everybody (Too Many Movies to List, 1940-1985)

7. Jonathan Demme vs. Jodie Foster (Silence of the Lambs, 1991)

8. Alfred Hitchcock vs. Tippi Hedren (The Birds, 1963; Marnie, 1964)

9. David O’Russell vs George Clooney (“Three Kings,” 1999)

10. Bruce Willis vs M Night Shyamalan (“Unbreakable,” 2000)

1. Will Smith vs Tommy Lee Jones – Men in Black II

2. Ryan Reynolds vs Jason Bateman – The Change-Up

3. Matt Damon vs Casey Affleck – Good Will Hunting

4. Rachel McAdams vs Ryan Gosling – The Notebook

5. Shia LaBeouf vs Tom Hardy – Lawless

6. Robert Downey Jr & Terrence Howard vs Marvel Studios – Iron Man 2

7. Michael Douglas vs Kathleen Turner – Romancing the Stone

8. Alec Baldwin vs James Toback – The Pick-up Artist

9. Bruce Willis & Demi Moore vs The Paparazzi – Stakeout

10. Sylvester Stallone & Richard Gere vs Each Other – Lords of Flatbush

An American martial artist, actor and producer. He was the first actor to portray the character and originator of the role in live-action film. He is well known for his roles as Han Sing in The Karate Kid (1984), Johnny Cage in Mortal Kombat (1995), Liu Kang in Mortal Kombat: Annihilation (1997) and most recently as Han Sing in The Karate Kid Part II (1986).

A famous American actor, producer and martial artist. He is best known for his role as Jack Traven in Speed (1994), Ted Logan in Bill & Ted’s Excellent Adventure (1989) and Johnny Utah in Point Break (1991). He has also appeared in several other films, including Point Break, Bill & Ted’s Bogus Journey, Little Buddha, A Walk in the Clouds, Feeling Minnesota, The Last Action Hero and Johnny Mnemonic. He also starred alongside Keanu Reeves in The Day the Earth Stood Still.

An American actor and film director who gained recognition on the 1980s television series 21 Jump Street, becoming a teen idol. He has starred as Johnny Utah in Point Break, Bodhi in Point Break, Jack Traven in Speed, Jeffrey “The Dude” Lebowski in The Big Lebowski (1998), Neo