Alright, so I might have been deep in nostalgia and beer when I created my first forum thread and I with a clearer mind I now realize that Mortal Kombat probably isn't second game of the year, but let me explain what I was thinking.
At the time I had not seen any mention of Mortal Kombat during several game of the year discussions and I felt that it deserved mention, especially because of its single player mode, which one could argue revolutionized the single player fighting game experience. My girlfriend was literally begging me to continue playing through the story when she usually loathes watching fighting games. The game's impact was all the more impressive considering how mediocre MKvDCU turned out to be (though you could see the promise) and how "just good enough" the previous generations MK's were. As a Mortal Kombat fan, MK9 was some of the most fun I have had with a fighting game since MK2 and was a return to form for the series, something I thought I would never see since renting MK4 for the N64.
Thinking back, I now realize that MK9's story mode was more "the best MK movie ever made" and less of a revolutionary single player fighting experience, let alone game of the year (behind Skyrim).
Sorry about the length of my previous post!