Stars who despised each other on set

When egotistical actors are cooped up together for months on end on a movie set there’s always going to be friction. On the whole though, lavish trailers and massive paychecks help smooth over any niggles. Yet sometimes the angst gets too much for these pampered princes and princesses. They may be actors, but even the most experienced stars can’t hide their genuine dislike of fellow performers. 

 
Harrison Ford and Josh Hartnett

The legendary Harrison Ford didn’t take too kindly to whippersnapper Josh Hartnett on the set of ‘Hollywood Homicide’. Ford reportedly referred to Harnett as a "punk", with the young actor retaliating by calling the veteran “an old fart”. As a result the pair barely made eye contact during filming and continuously picked on each other at press junkets. The film flopped.