Why she's sexy: This 2007 movie, an adaptation of a poem you probably read in high school, Angelina Jolie is all kinds of naked. Okay, sure, it's technically CGI, but the character looks just like Jolie, only wearing nothing but gold body paint.
Why she's evil: The hot babe exterior is a ruse she uses just to get it on and produce monster-babies. And boy, does it work, as she gave birth to all the creepsters that populate this movie. Worst of all, she survives the film, meaning that she probably got busy making more monster-babies with which to terrorize the medieval countryside