9. Sean Young
Sean Young is probably best known as the female lead in 1982's sci-fi classic Blade Runner. She had a couple of other hits in the 80s (including Dune), but the intensity of her performance opposite Harrison Ford suggested that she was destined for greater things. However, towards the end of the decade, Young began to get a reputation for disruptive behaviour on set. She clashed with Oliver Stone during the filming of Wall Street which reportedly led him to cut her role down. After a rocky time filming the 1988 movie The Boost, her co-star James Woods sued her for millions for harassment. It was settled out of court in 1989, according to EW. She has starred in a long list of TV movies in recent years, and the sheer volume of credits on her IMDB page suggests that she may be trying to make ends meet. Since 2008, Young has been in and out of rehab for alcoholism, and is periodically featured in the tabloids for drunken conduct such as an attempt to break into a post-Oscars ball in 2012. Here's hoping that Young can deal with her demons and find her way back to roles worthy of her talent.