You can always just do a screencast where you narrate the use case. That way you can give a nice introduction, explain things along the way, and provide a wrap-

You can always just do a screencast where you narrate the use case. That way you can give a nice introduction, explain things along the way, and provide a wrap-up. As you said, having a quick 3-5 minute video along with a boring PDF can go a long way to getting people to actually look, understand and care about what you're working on. Videos can easily be sent around and re-watched, plus even executed have time for them (unlike long PDFs).