ViewDeckController - iOS App Source Code
This class largely implements the sliding views found in the Path 2.0 and Facebook apps.
The ViewDeckController supports sideview in all directions (left, right, top, bottom), in any combination: you can leave any of them nil for example. You can pan the center view to the side to reveal any side view.
Provides a delegate to control panning, opening and closing side views.
There's also a bunch of messages defined to open or close each side appropriately.
Integrates nicely with UINavigationController. Handles rotation and resizing.