This is one of my favorite This I Believe essays.
UPDATE: I ended up writing a book chapter about these two DMCs and the different ways students composed their written essays and DMCs (Rish, 2013).
Rish, R. (2013). Exploring multimodal composing processes with pre-service teachers. In K. Pytash & R. Ferdig (Eds.), Preparing teachers for writing and writing instruction (pp. 1-15). Pittsburgh, PA: ETC Press.