CoD wasn't exactly my favorite but I have some great memories of it. The reason is that most of friends were into Call of Duty, Age of empires and then later Counter strike.
I myself was NFS a kind of guy. Frankly I am not a gamer but when I did play it was NFS. The guys and me, we used to get together overnight for some gaming and it was when Call of Duty mania caught up with us. My memories are mostly of having fun while the guys played and I shouted from behind :-)