Not too shabby. Kotaku posts the finalists for the Academy of Interactive Arts and Sciences (AIAS) awards and includes several Microsoft Xbox, Xbox 360, and Games for Windows titles. Still waiting for the AIAS website to post their official list, so I don't have actual confirmation that these are 100% accurate (though I have to trust Kotaku for now...).
“Age of Empires III” – Computer Game of the Year, Strategy Game of the Year and Online Gameplay
“Forza MotorSport” – Racing Game of the Year
“Jade Empire” – Art Direction, Original Music Composition, Outstanding Character Performance (Male), Outstanding Character Performance (Female) and Role Playing Game of the Year
“Kameo: Elements of Power” – Original Music Composition and Visual Engineering
“Project Gotham Racing 3” – Racing Game of the Year and Online Game Play
“Zoo Tycoon 2” – Game Play Engineering