1. God of War
2. Devil May Cry/Ninja Gaiden - tie
I haven't played very much DMC, but what I have played has been hit and miss. I enjoyed what I played of DMC3, but the DMC4 demo was pretty mediocre. As for Ninja Gaiden, I enjoyed the NGS demo, but I haven't really played much else.
I love God of War, mostly because Kratos is such a badass. :P