I've been looking for an easier way to do stop-motion animation and common craft videos easier.  This new app for the iPad is pretty close to what I've been looking for.  iMotion HD takes video at intervals of your choosing. To make this most effective you'll need some apparatus to hold the iPad still.  One of the most interesting functions of this app is that if you  have a second iOS device, you can have one device as the camera and the second as the remote. This is a free app with no sign up required.