I agree that after you've done them dozens of times they start to get old, but God of War did do a few things right with regard to finishers (at least, the first one, I haven't played any of the sequels). 1) Different finishers for each enemy type. Not just animation-wise, but input as well. 2) For regular enemies, it was optional. If you wanted a breather from the combo-fighting, do a finisher when it seems appropriate. 3) Before the aforementioned sword down the throat, he headbutts the minotaur. Let me say that again: He headbutts a minotaur.
[By the way, this was the first CAPTCHA that came up for this post. I'm not sure where to find the Omega on my keyboard...] http://www.google.com/recaptcha/api/image?c=03AHJ_VusXR6ovY9WFk-1H-zjAuX5xAhErzQR0GjALRsgPzDN4k5udeBVorvL3VNGBFqY3C2ZMcQfdLr0ZGkM1FcNkjuLmb8Rl6I0bb8lx8_fDcuog1kmBIFKA5_qB4lY7ApIsngTEWTMx1Z4XvsvlkYiGT1yiC62O-Q
[By the way, this was the first CAPTCHA that came up for this post. I'm not sure where to find the Omega on my keyboard...] http://www.google.com/recaptcha/api/image?c=03AHJ_VusXR6ovY9WFk-1H-zjAuX5xAhErzQR0GjALRsgPzDN4k5udeBVorvL3VNGBFqY3C2ZMcQfdLr0ZGkM1FcNkjuLmb8Rl6I0bb8lx8_fDcuog1kmBIFKA5_qB4lY7ApIsngTEWTMx1Z4XvsvlkYiGT1yiC62O-Q