Garr Reynolds is a communications expert who teaches about effective presentations. He advocates for a minimalist "Presentation Zen" style with simple, visually appealing slides used to enhance the speaker's storytelling rather than serving as the focus. Reynolds emphasizes preparing the key message, using vivid examples and personal anecdotes, and delivering presentations extemporaneously while engaging the audience. Effective presentations share information through clarity, creativity and passion rather than relying on bullet points or being read verbatim from slides.