In one of the most beloved exchanges of The Empire Strikes Back, Leia finally reveals her love to Han as he's about to be frozen in carbonite. His response, "I know," perfectly encapsulates his roguish character while breaking our hearts.

This great line was also an ad-lib, and Lucas has always considered it too mean on Han's part. But with no other take available to cut to, he's been stuck with it. The inevitable Star Wars change, as soon as technology allows Lucas to change lip movements flawlessly (or close enough), will be Han responding, "I love you, too."

Han will then tell Chewbacca the same thing. And then he'll have Chewbacca turn around, so he can tell C-3PO how much he loves him, too.