I've been playing with Flowgram, and really like its potential for digital storytelling. I've found the audio a little clunky to use but otherwise it's a great little app. Load of potential for story building.
A Flowgram page will be added to the Teaching Method section soon.

Oh, and I built a quick website tour of The Digital Narrative with it too.

Animoto page added the Teaching Method list - if you haven't checked it out yet, go and do so now!