I've made an asteroids-like game where there are asteroids coming towards you, and to push them away you have to shoot them. To aim you have to rotate the phone, and the ship will always shoot upwards (either press any button or click on the screen to shoot). It's in the extras-devel, try it out with apt-get install asteraids!

There is still a lot to do of course, but it's more of a proof of concept thing.
Oh, and you need python-box2d to run it.