how-to videos or, more commonly, audio/slideshows; useful rhetorically for both technical writing and instructional video learning; web2.0 sharing of video that is perhaps instructionally more useful than YouTube.
"descriptive list which was created by Georges Polti to categorize every dramatic situation which might occur in a story or performance"; tips for screenwriters looking for ideas
example of how to incorporate personal history, music, and slides in portrait of dobro player and singer; also shows effectiveness of short, under three minute, audio slide show documentaries.