Want to learn to fly an airplane? Believe it or not, the iPad makes a great flight simulator--provided you're using the right app. Laminar Research's X-Plane for iPad is powerful flight-sim with beautiful HD graphics optimized for the tablet. Touchscreen cockpit controls, detailed instrument panels, and background chatter from Air Traffic Control make you feel as if you really are flying--without the barf bags. Priced at $10, X-Plane is a lot of fun.