Deep Blue Sea
When, in the midst of Sam Jackson's rallying speach, the shark leaps out of the water, grabs him, bodyslams him to the floor, and slithers out with him, only to tear him apart with another shark underwater.


I'd also bring up a theoretical kill from Commando. I saw an interview with Arnold once where he talked about the scene where he's trapped in the shed and starts tossing the radial saw blades. Apparently he had a concept for the scene where he wanted to burst out with an ax, cut one guys arm off, and then beat him down with his own severed arm. The producers said it was too horrible to film, but it would have been pretty sweet if they had.