Did you know that its most famous line was improvised?

FX's new series Alien: Earth centers on a female character taking on a horde of killer aliens — and so of course, any fan can't help but be reminded of Sigourney Weaver's Ripley in the Alien films.

The original Alien trilogy made Sigourney Weaver a household name. Her turn as Ellen Ripley was so iconic that the American Film Institute put her at number eight on their list of best film heroes. It ...