I am only really feeling the urge and need to own these games 
NBA 2k10.  Kobe is on the cover and it is the 10 year anniversary of the best damn basketball game ever made.  You can go wrong with this one.  Though I usually wait until February of next year to get it, right before All-star weekend and after the Super Bowl 
Modern Warfare 2.  Its Modern Warfare 2. 
Forza 3.  I love the idea of being able to tune a car and replicate what I would like to do on my own car.  If only i had enough time to do that and paint my cars.  This will take up a lot of time.  And the driving is fun too.