Renee Hobbs and Anu Vedantham have a great presentation available through CNI on “online video creation by undergraduates: consequences for media literacy.” They make the case that what is essentially digital storytelling creates lots of opportunities for collaboration and synthesis, not to mention tons of engagement for students. It’s a long lecture, but worth listening to if you’re interested.
During the lecture they mention the UPenn mashup contest, and you can see multiple winning entries from that context over the years.