Worst Performances: Showgirls (1995), S. Darko (2009)

It's funny how one tremendously bad film can leave a permanent stain on an actor or actress' record. Just look at the reputation of Miss Elizabeth Berkley: In the wake of the infamous cinematic nosedive that is Showgirls, the Saved by the Bell! alum has earned an unshakeable stigma—she's the star of one of the worst movies ever made. And, sadly for her, anyone who curiously gives that soft-core turkey a look will be subjected to Berkley's horrendous overacting.