1. Harrison Ford & Josh Hartnett in Hollywood Homicide
During the making of Hollywood Homicide, there were times when the two actors, Harrison Ford and Josh Hartnett, almost wanted to commit homicide because they couldn’t stand each other. According to rumors, the two argued throughout the entire production of the 2003. Hartnett even admitted that the two would avoid making eye contact with each other when they weren’t on the set. No one really understands why these two never hit it off, but assume it was just clashing personalities.