Google uses a very neat activity/view slider in many of their apps. I'm wondering if you know what it is called? If it is available in any of the open sources apps? Or if you have an idea how to build one?
It works as a tabbed pane showing just the current, the previous and the next tab. Swiping left or right on the pane, or in the activity, moves you between the views with a lovely, coordinated animation.