The correct answer to this open question is the following.
Unfortunately, you did not mention the multimedia that someone recently presented to you. Just you know about those presentations. We do not have any idea what were those presentations.
However, trying to help you with something, we can comment on the following terms so you can adjust the answer to your necessities.
The element that caught my eye the most and helped me learn the information presented, is the one that smartly combined text, images, photos, infographics, and video.
This combination of elements is so important to better understand the presentation because it combines all the sensory elements to improve learning.
Some students learn better by reading texts. Others, by observing infographics. Others like video because they are more visual and prefer sound and image through videos.
The important thing in a presentation, no matter the format, is that is clear, concise, and to the point.
