Why don't you like Call Of Duty?
It's about as overhyped as things come. I just feel that every game is virtually the same with different guns. Don't get me wrong it's a very fun multiplayer game, and I enjoyed Nazi Zombies, but people hype it to be the end all be all of games. He says he doesn't plan on getting Live, and the singleplayer for COD games at least for me does not in the slightest make it worth buying. I just think there would be more games out there that he could buy which he would enjoy far more than COD. It gets very boring, very fast for me.
Edit: How could I have forgot Gears of War. Easily my favorite shooter game ever made.