Nice use of gesture semantics (in #WP7): http://www.wpcentral.com/windows-phone-app-review-gestulator

I installed it and after figuring out that the keypad is the gesture target area, quickly got the hang of it. The only unnatural thing about such an interface is having been conditioned to think of a keypad as just being for tapping. I’d actually institute some fast-moving, directional animations that obscure the screen like this: