Written by Mr. Mouseburger 22nd Jan 2008
It is the climax of the film and John Connor, Sarah and the Terminator, are in the typical abandoned industrial complex, which holds just the right sort of equipment to kill off the bad guy, the T-1000 (q.v.) Needless to say, after significant pummelling and an unnecessarily long "hunting-John -Connor" scene, the Terminator manages to kill the T-1000.
However, to inject a bit of pathos into the film, for some reason the movie executives decide that Arnie needs to kill himself (despite the fact that a few years later he will need to come back YET again).
The explanation given is that they must destroy the other CPU so that Skynet can never come into being (although it still does in the third film). However, the problem is that the Terminator can't "self-terminate" and so Sarah must kill him. And so how do you think they do this? Pull out the CPU and smash it?! No. Crush Arnie in a large steel press? No.
They actually lower him, with balls-aching slowness (for added drama), into a vat of molten metal that was used in to kill off the T-1000. All the while, the signature tune of the film is playing and we see irritating turd Connor weeping at his mother's side. As the Terminator sinks into the vat, he gives the most cringemaking thumbs up in history, before the superheated metal finally reaches his CPU, killing him.