Famous Movie Lines That Were Actually Improvised
The Empire Strikes Back
Harrison Ford tends to know what his characters are about even better than the director does. This was the case in The Empire Strikes Back, when Princess Leia tells Han Solo that she loves him as he’s about to be encased in carbonite, perhaps never to be saved.
Han’s reaction was not the “I love you, too” that was in the script.

The Empire Strikes Back
He didn’t think that sounded authentic for Han. Instead, he said, “I know,” in one of the classic Star Wars moments.