Have any of you seen the new app out for the iPhone and iPod touch? It's called MyCoachSwing, it's a great resource for teaching the simple mechanics of a baseball swing. It uses an image overlay of a professional baseball player to compare to your players swing) I used it with a few kids on my team the other day and I've seen improvement already. http://itunes.apple.com/us/app/my-coach-baseball-hitting/id496954951?mt=8&ls=1