The Descent
Watch this movie and I promise, you'll never want to go spelunking again! Seeing this all-woman crew of daredevils navigate the pitch-black caverns and tight spaces of an Appalachian cave is thrilling enough on it's own - especially if you're the claustrophobic type - but The Descent offers so much more in terms of scares, once the lights go out. Scenes from this film still creep into my mind years later, whenever I find myself in complete darkness.
Ginger Snaps
A Canadian horror classic! Ginger Snaps is a werewolf movie on it's surface, but at it's heart is a clever commentary on society's fear of female sexuality. The close bond between two sisters, becomes strained when one is bitten by a werewolf and starts to develop a taste for human flesh.
A Girl Walks Home Alone At Night
Ok, so technically this one doesn't pass the Bechdel test, due to the main characters' lack of a name, but we'll let it slide this time. Dubbed the worlds first "Iranian Vampire Spaghetti Western," the film follows the girl - a Chador-clad vampire who preys on men who do bad things to women - as she skateboards through the dark suburban streets of a no-good town (literally named "Bad City,") stalking her next kill. Written in Farsi and filmed in black and white, "Girl" is light on dialogue but heavy on moody atmospherics and iconic visuals.