Martin Scorsese. Steven Spielberg. Akira Kurosawa. You’re not in their league. But you can still make cool short movies with Apple’s iMovie app ($5) on the iPad. There are eight movie themes to choose from. You can add videos and photos from your library or shoot footage right into your timeline, as well as create a soundtrack from your music library. Every movie needs a promo trailer, and there are a dozen Hollywood-style movie trailers to choose from. Ready, set, action!