Debra Winger
Debra Winger was a huge star in the '80s and '90s. She seemed like a sweetheart to the public, but most of her costars would totally disagree. Apparently, Shirley MacLaine just about quit Terms of Endearment because of Winger. The producers had to drag her back from the airport!
Sylvester Stallone and Richard Gere
Fun fact: Richard Gere was supposed to play Chico Tyrell in The Lords of Flatbush. He was let go from filming because he and cast member Sylvester Stallone didn't get along. They constantly bickered with one another, and at one point it became physical. Gere sprayed mustard all over Stallone, who then went to elbow Gere in the head. The two were removed from one another and Gere eventually let Gere go altogether.