Congratulations! It's always fun and frustrating to try a new system.
I would definitely recommend Shadow of Mordor. It's a great game and explores the haptic feedback triggers well. Also Trials Fusion is another good one - I like it better than the 7th gen games.
I also really enjoyed Assassin's Creed 4, and it's on sale really inexpensively all over right now. It looks good and is fun to play.
For exclusives, have you thought about Ryse? It's like $10, and set it to hard and you might enjoy it like I did. Plus Dance Central Spotlight, Disney's Fantasia and Kinect Rivals.
And don't forget Project Spark. Go through a tutorial, it's really fun to make your own land/island/cave/volcano whatever you make.
Happy Gaming!