In this new video from YouTube user InfoZenn, you can get a good feel for some of the features in iOS 5 on the iPad. He shows off the simplicity of iCloud backup, as well as some of the intuitive multi-touch gestures used in iOS 5 for app switching and multi-tasking, including the new down-swipe that brings up the new notifications panel. This clip also nicely demonstrates the new 4-finger pinch gesture, which can be used to leave apps and return to the home screen.

See here for the full list of iOS 5 features.