Over the course of the Star Wars story, Darth Vader lost six of his four limbs. Luke Skywalker famously lost his now highly collectible right hand. That injury earned him a kiss from resident hottie Leia. Advantage: Luke.
Other characters in Star Wars got off less well. Video editor Pablo Fernández Eyre, who once illustrated the visual symmetry in the movies, now shows this compilation of all of the traumatic amputations performed with lightsabers over the course of Star Wars. It's a total of 26 by my count.