The Shining
Can you believe the iconic “Here’s Johnny!” bit was improvised? The Shining would not have been the same without it. Jack Nicholson apparently invented it as a tribute to The Tonight Show with Jonny Carson.
Star Wars: The Empire Strikes Back
We are all familiar with the way Hans Solo responded to Princess Leia’s confession of love. However, the “I know” line was apparently his invention. It was delivered off the cuff, though we think it definitely suited our favorite intergalactic smuggler.