We've all heard the one about the man who dashes in to save the helpless damsel in distress but these silver screen sirens can thwart baddies all by themselves and inflict serious damage without breaking a nail. Meet our list of movie heroines who truly kick ass, lead by heavy-hitters like Ripley and Beatrix Kiddo and nobly continued by waif punk hacker Lisbeth Salander, the star of David Fincher's version of The Girl with the Dragon Tattoo.