Amazon Storyteller is a great resource for anyone who wants to quickly create a graphic narrative.  Though Amazon has released this story-visualizer as tool for movie-makers, it is also useful for anyone who wants to tell a visual story.

This could be the lawyer who wants to author a graphic version of a legal process.

Or it could be a designer who wants to storyboard out how their user will use their product.

How do you use it?  Upload a script, choose what images will be used for the people, setting, and props, and let the program give you a first draft of your visual story.  You can tweak & edit it from there.