 WILHELM SCREAM: As Luke slashes an enemy with his lightsaber and he  falls into the Sarlacc pit. It can also be heard again a second time  as Luke slashes another enemy into the pit soon after, but it is  barely audible. Additionally, in the Special Edition, a Wilhelm can  be heard during one of the huge celebration scenes, on Coruscant,  after the Death Star is destroyed (an Imperial Stormtrooper is crowd  surfing and the Wilhelm is heard as he passes to the right of the  film frame; since this is a celebration scene rather than a fight  scene, the Wilhelm was presumably included as a joke).