What are some good games to play for Xbox 360 ?

I just recently bought a Xbox 360 and I was wondering what some good games would be for it. Im into shooters, role players, and action/ adventure. I already own Call of duty World at war, Black ops, Modern warfare, NCAA Football 2010, Madden 2010 ,assassins creed, Burnout Paradise, Gears of War 1&2, Dead Space, Batman Arkham asylum, and have pre-orderd Batman Arkham City, Modern Warfare 3, NCAA Football 2012, And Madden 2012. (FYI Im going for the even # Sports)