How to Use Multi-touch Gestures on the iPad
In addition to the tried-and-true pinch-to-zoom, iOS 5 includes a few new gestures to make iPad navigation faster and easier.
One-finger flick: Scroll to the left while in the Camera app to navigate through the images.
Four-finger and five-finger flick: Swipe up to reveal the multitasking bar. Swipe to the left to scroll through all open apps. Scroll to the right to cycle through the app you began with.
Pinch-to-close: Pinch the screen with five fingers to close an app and return to the home screen.