I would like to know, if there are (m)any more FPS games, that use gyro aiming! I have tried NOVA 3 and Modern Combat 3, and want more! I didn't even like the games them selves so much, but the gameplay was so enjoyable, that I would like to see if there's any, a bit more memorable games on offer.
If you have a Sphero there are several games that use it to aim. Nyan Cat and Exlile use it to aim. Although that may be pretty far afield from what the OP is looking for.