Horror is often cited as the most misogynistic movie genre because male characters are usually the murderers and women are usually the victims of their heinous crimes. However, there are many classic horror gems in which men become vulnerable and women literally cut their dicks and balls off. I've collected 10 castration scenes from horror movies, which can all be viewed here. It's super NSFW, natch. [Street Carnage]
Well, there's always the French film "Haute Tension." It's about a lesbian who murders her unrequited crush and said crush's family. It also features a wicked car chase scene with the song "New Born" by Muse in the background. I think that might be the only reason I ever remember this film at all.