30. Nicolette Sheridan
Worst Performances: Virus (1995), Beverly Hills Ninja (1997)
If Nicolette Sheridan would just lighten up, she'd be much more likable as an actress. Instead, the former Desperate Housewives star has a knack for bringing a distinct coldness to whatever role she's playing, an ice queen demeanor that's never dialed back and ultimately leaves the English veteran seeming unapproachable. That's not exactly the impression you want to give when acting in comedies like Spy Hard and Beverly Hills Ninja, since the laugh-less scripts don't need much help repelling audiences.