Todd B. Freese demonstrates the adaptability of one electronic format (powerpoint) into another (his blog). His presentation on the latter half of Texas history is embedded into one of his blog postings, "Texas History Review," at http://www.toddbfreese.com/2009/05/19/texas-history-review/
The 30 slides combine summarizing narrative (often bulleted) with photographs. The viewer advance from slide to slide at their own pace.
To press the possibilities, one could create a separate, fuller powerpoint for each slide in the review. That may be what he's doing in the day-to-day classroom.