u remember in the MK movie when liu kang used sub-zero's powers to kill him? well u should be able to do that in the game. here's how i see it:
1)screen goes black
2)Finish Him!
3)press the fatality buttons
4)the opponent comes back to life and tries to attack you with some kind of super move (like sub-zero did in the mk1 movie)
5)your chatacter reverses it and uses it to kill the opponent(like liu kang did in the mk1 movie)
6)YTILATAF!! (the voice would say fatality backwards)