Here's one... bad guy falls in a vat, lake, or other various form of corrosive liquid and just when you think he's gone, his hand comes up out of the water somehow the rest of his body hasn't been eaten away enough to allow him one last desperate attempt at freeing himself. I've seen that scene so many times in so many different movies... Terminator 2, Tomb Raider, Batman... the list goes on and on!