If you work in film or video, or just want to put together the next great Star Wars fan film, Springboard is designed to make the storyboarding easier. Or at least computerize the process. It does have some nice tricks, like a good collection of easily editable arrows for camera moves. The vector-based camera blocking tools look like a lot of fun to use. What's more, you can draw on your frames, and later animate your storyboards as animatics, complete with transitions. All of this can be spit out to a web page (images) or movie file. Springboard is sort of free. You have to "update" to a new free version every four months, and there's a few printing and "export" limits. Some of that might be a deal-killer for you, because all too often you have to eventually dump to paper and move things around manually.