Nancy Duarte, the author of "Resonate -- Present Visual Stories that Transform Audiences" and CEO of Duarte Design, recently gave a talk at TedxEast. The title was:
You Can Change The World
She passionately dissects the anatomy of world-class speeches. In the end, it's all about engaging and motivating the audience. In her 18-minute talk, she dissects Martin Luther King Jr's famous "I have a dream" speech and Steve Job's iPhone launch keynote speech.
In medical education, however, you can't exactly follow her template. You might be able to create a similar bimodal structure of what is and what could be by presenting cases and asking "what WOULD you have done?" and "what you SHOULD have done" questions to illustrate a gap. Also, you should consider sprinkling in stories of personal experiences throughout your talk to further engage the audience and solidify learning points.
Spend a few minutes and listen this engaging talk.