George Clooney & David O. Russell
In 1999, George Clooney got the chance to work with filmmaker David O. Russell, who was notorious for his poor treatment of stars and crew. Things got heated after the director allegedly shouted at extras and the celebrity came forward in their defense.
In a 2000 interview, Clooney revealed the extent of the physical altercation. Luckily, they finished the film, but the Golden Globe winner vowed to never work with the director again. Meanwhile, despite his brash attitude being an open secret in Hollywood, Russell remains active, recently working on an untitled project starring Margot Robbie.