I searched the itunes store, and couldn't seem to find any, but I saw a clip of one in a video. Unfortunately it was a short clip and didn't say the name of the game.
There are a few AR games out there, you might want to take a look at Star Wars Falcon Gunner AR-Drone Traveller-AR AR Missile I am personally waiting for a game where I can fight off zombies on my street
Can you confirm whether or not Star Wars Falcon Gunner works on the ipad 2? The requirements on itunes don't list ipad.
I thought it was, most of the reviews are listing it as an iPad/iPhone app. If you check the reviews on iTunes you should be able to tell for sure though!