Disturbing personality and terrible attitude, Shannen Doherty has a reputation of being one of the worst actresses in the game. According to several co-stars, her bad-girl image and diva demands made filming a nightmare during the first four seasons of Beverly Hills 90210, which led to numerous catfights and verbal assaults with Jennie Garth. In fact, things were getting so bad to the point where Luke Perry put in a request to cool down the love story between the characters of Brenda and Dylan, suggesting to have fewer up-and-close scenes with Doherty. But the nail in the coffin was when she supposedly introduced the boss’s daughter Tori Spelling to a man that eventually beat her. You don't mess with Aaron Spelling's daughter and expect to keep your job.