As far as Kinect games go I would pick up Kinect Sports. If your into the dancing games Michael jackson the experience comes out the 12th.
For regular controllered games
Halo Reach, Wars and ODST
Gears 1&2
Fable 2&3
Forza 3
Lost oddssey
Blue Dragon
Too Human (It's a very fun game imo and it's dirt cheap so I would check it out.)
Alan Wake
ME1
Crackdown 1&2
Bonjo & Kazooie: N&B
Ninja Gaiden 2
Metro 2033
Splinter Cell: Conviction
Then there is a mess of awesome XBLA games like Shadow complex, the maw, comic jumper, splosion man, limbo, toy soldier, super meat boy, trials HD, Beyond good or evil, torchlight, raskulls, ilomilo, world&Kingdoms of kefling, etc.







