We know how good the iPhone 4's camera is, but what else can it do besides snap pics? With the StopMotion Recorder, make some pretty kick-ass amateur stop-motion movies. My own attempt was sad, but the app is powerful.
StopMotion Recorder works by laying out a viewfinder grid, allowing you to manipulate bit by bit whatever objects you're working with, keeping them more or less aligned. The app can either snap frames automatically (at adjustable intervals) or capture with a touch instead. (The app's dev told us a clap-activated feature is in the works, which sounds fantastic).
After capturing each frame, you're left with a "ghosted" image of the previous one overlaid, making it easy to see how much or how little you wish to deviate, for varying smoothness of animation. If you mess up a frame, don't worry - you'll have the option of rotating or deleting it altogether after you're done capturing. Once you're satisfied, send the video on its way through an impressive number of export options: email, YouTube, Twitter or just to your camera roll. [iTunes]