Blimey: xtranormal. Write a script, embed actions, and have your movie rendered and played out by not-quite-Lego-minifigs.
Unbelievable. Could be a tremendous tool for script development and storyboarding, especially for first-time film-makers. I love how the camera shots widget allows you to pick MCU, over-the-shoulders, two-shots, CUs, and all the rest, without having to know what any of them are called. All very slick indeed.
The biggest achilles heel is the speech performance. It’d be incredible if you could record your own audio clips in place of typing dialogue.