I was discussing Star Wars with a kid at work today. Not unusual. The topic of how many limbs are lost from the first 6 films came up. FYI the answer is 23. So I had a thought and Darth Vader lost the most limbs, all which by lightsaber, for a total of 5 limbs. If I guess Vader's age by his (SPOILER) death in Return of the Jedi he was in his 40's. That means he lost at least one limb per decade of his life on average. ALTHOUGH if we get really nerdy on this (just what you wanted) he was like 10 when he became a Padawan. Not sure how old when he actually started fighting in full fledged lightsaber duels. So lets just say 15 or so. So if we don't include the first 15 years of non combat his average for lost limbs in years get even worse. My conclusion in all of this... Darth Vader has to be the crappiest lightsaber duelist in the SW Universe. He lost every limb and one of them twice. Totally bad at it.