Turn your iPhone into a Phaser from the movie, includes the trailers and some images. It's free. I don't have an iPhone or a Touch, so I don't know how good it is.
Link opens up the iTunes Store;
http://itunes.apple.com/WebObjects/MZStore.woa/wa/viewSoftware?id=309070845&mt=8
Link opens up the iTunes Store;
http://itunes.apple.com/WebObjects/MZStore.woa/wa/viewSoftware?id=309070845&mt=8