4. "Who's Scruffy Looking?" - Star Wars Episode V: The Empire Strikes Back
One of the funniest Han and Leia moments is this scene in the Hoth base's infirmary, where Luke is sent to recuperate after falling prey to a vicious Wampa attack. When his friends come to check up on him it doesn't take long for Han and Leia to begin antagonizing each other, which quickly escalates to Leia yelling at Han that he's a "stuck up, half-witted, scruffy looking Nerfherder!" The chemistry between the two actors is what seals the deal in this scene, in addition to Lawrence Kasdan's terrific screenplay. Not only does the script provide Leia with her inimitable line, but it also features Han finding fault not with being called stuck up or stupid, but scruffy.