Star Wars: The Empire Strikes Back
In Star Wars: The Empire Strikes Back, we see Han and Leia saying goodbye to each other. The princess even told him, “I love you.” However, the director Irvin felt that something was missing and asked Ford to reply how he felt. Ford also thought that his character’s response was not authentic and opted to reply, “I know.”

Star Wars: The Empire Strikes Back
Young Frankenstein
Yet again, we have Gene Wilder in the hysterical movie Young Frankenstein by Mel Brooks. No, we are not going to talk about Gene this time. Let’s take a look at his co-star Marty Feldman in the role of Igor. Luckily enough, Mel allowed Feldman and other actors in the film to improvise. This is when Marty came up with the line, “What hump?” This was a great addition to the scene and Brooks decided to keep it in the final cut!

Young Frankenstein