So while I was using my ipad 2 the other day, I randomly swiped the screen with 4 fingers while playing a game and it switched to another app that I had open at the time.
At first, I didn't know what happened. But then after fooling around a bit, I figured out what I had done.
Before this, I had know idea this feature existed on the ipad 2. What are some other neat things that the ipad 2 can do that may not be so obvious?