Overkill kills?

I was reading and reviewing a few series on the weekend and in the process I came across a couple of great overkill moments, essentially that the character has already killed the enemy once over and then just decides to completely make sure that their adversary is dead.  I should note that there are spoilers ahead (though it likely doesn't matter because who reads Dejah Thoris or Danger Girl?).  The first of these was from the series Back in Black where Johnny Barracuda and Secret Agent Zero are sneaking around on a ship when they get discovered 

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Overkill doesn't bother me. This coming from a person who is against the death penalty.

@RazzaTazz: Real world, I wouldn't be scarred, because I've seen some messed up things. Thanks internet! While I was younger and I didn't like it one bit but never put me off anything.

They know that it is possible for the person to fake the death and so they go overkill to make sure they are actually dead...its pretty logical.

@RazzaTazz: :O I'm watching Die Hard 4 now. I was happy this pain in the arse female character was in a van that fell from a pretty high location and blew up with her in. That in real life, I'd be against it.

LOL that Dejah Thoris sequence reminded me about a scene in Abraham Lincoln Vampire Hunter where Abe is fighting one using his axe and when the vampire got on hold he used a secret button under the blade edge to shoot him with the handle. The axe was also a shotgun.

Trust me I seen some really ludicrous overkills, these examples are really tame.