He's a Sith, I expect him to act out in rage. Sith use their rage to lash out at their enemies. In this case, he focused it on Luke and ended up taking off the kid's hand. But I'm talking about the exclamations themselves. Do you really think they belong with this towering, villainous half-machine that has been battle hardened? I don't think it does. That's why I suggest to Adywan that it be edited out. I could use the "first time we saw it in that context so it must be true" logic, and going by that, there'd be no point in editing any films. The yells were something that bothered me from the first time I watched ESB, and come to find out, it's bothering some other fans interested in this project as well.