As a lifelong genre fan, I can testify that there has been a surfeit of unforgettable science fiction movie quotes. Whether it's Roy Batty waxing poetic about moments being "lost in time like tears in ...

Crystal: [after she and Amber have revealed themselves to be aliens and changed back] I have another confession... Shaggy: Like, I know. You're not a government agent. Crystal: Well actually, we are.

Sigourney Weaver's Ellen Ripley wasn't even supposed to be Alien's final survivor, with early drafts giving her a smaller role. The focus shifted toward Ripley as the screenplay developed, ultimately ...